SOPs

Electromagnetic Sieve Shaker Calibration, Purpose:

Electromagnetic Sieve Shaker Calibration, The purpose of this SOP is to describe the operation, calibration and cleaning of Electromagnetic sieve shaker (Model: Electrolab EMS-8) used for the sieve analysis in the quality control laboratory at XX Pharmaceuticals Ltd.

Electromagnetic Sieve Shaker Calibration Scope:

This procedure is applicable to the Electromagnetic sieve shaker (Model: Electrolab EMS-8), used for conducting sieve analysis and particle size distribution using test sieves, in the quality control laboratory of XX Pharmaceuticals Limited.

Definitions / Abbreviation:

[][]SOP: Standard Operating Procedure.
[][]QC: Quality Control.
[][]ASTM: American Society for Testing and Material.

Responsibilities:

The roles and responsibility is as follows:

Executive, QC

[][]To ensure that this procedure is followed.
[][]To maintain the records properly as per SOP.

Manager, Quality Control

[][]To ensure that this procedure is kept up to date.
[][]To confirm that the SOP is technically sound and reflects the required working practices.
[][]To arrange training on the SOP to all concerned personnel and to ensure implementation of the SOP after training.
[][]Schedule calibration of the instrument at the defined intervals.

Head of Quality Assurance

[][]Approval of the SOP.
[][]To ensure the overall implementation of the SOP

Procedure:

Precaution(s):

[][]The equipment should not be set near to room heating equipment or direct sunlight.
[][]Use mask, gloves and safety goggles during handling the instrument.

Operation:

[][]Check the machine is clean and calibrated.
[][]Ensure that the working bench is clean.
[][]Switch on the power from its main and power on the instrument.
[][]Display indicates: ELECTRO – MAGNETIC
[][]SIEVE SHAKER EMS-8
[][]Ensure all the sieve diameter and pore size should be as per ASTM standard. Keep received certificate in appropriate place.
[][]Use certified sieve.
[][]Select the sieves required as per monograph/ procedure.
[][]Check the integrity of the sieves.
[][]Ensure the sieve numbers are matching with the ASTM number given on the sieves.
[][]Place the sieves in the descending order of sieve No. on the collecting pan.
[][]Set the sieves on the instrument, shaker ensures that the value of the amplitude is set at the lowest.
[][]Set the desired time (Maximum 99 minutes) by pressing the time key provided below the “TIME” display.
[][]Set the desired amplitude (power level 5 to 20) by pressing the power key provided below the “POWER” display.
[][]Select Continuous or intermittent mode by pressing “CONTNUOUS” or “INTERMITTENT” key respectively.
[][]Weigh the sample and evenly spread the same on the top sieve and close the sieve.
[][]Place the sieve sets on the base of the holder firmly and lift the assembly to touch the top of the holder.
[][]Tight the assembly and then press “START” key to start the operation.
[][]The shifter works during the time and with the power level programmed. In case of intermittent mode, the shifter will start vibrate at interval of 0.5 second.
[][]After completion of this process carefully remove the sieve set.
[][]Collect the samples retained on each sieve and on the collection pan and weigh the quantity of sample retained on each sieve.
[][]Calculate the percentage of the sample retained on each sieve and put the analysis data in the report sheet of electromagnetic sieve shaker.
[][]Check the integrity of the sieves again, if not ok label it as rejected and discard the same as scrap.

Cleaning of the Sieve:

[][]Do not use dissolvent or any hard material for cleaning.
[][]For sieves less than 500 micron use ultrasonic and detergent. The sieves should be gently cleaned by keeping it in ultrasonic for 4 to 5 minutes.
[][]Cleaning with soft brush followed by ultrasonic cleaning can be used for sieves having mesh size more than 500 micron.
[][]After cleaning sieves should be rinsed thoroughly and left to dry in an upright position.

Cleaning of the Sieve Shaker:

[][]Switch ‘OFF’ the instrument and switch ‘OFF’ from the mains.
[][]Clean the outer surface of the instrument with Isopropyl alcohol and dry it with tissue paper.
[][]Clean the surrounding areas of instrument with a cloth dampen in water

Calibration:

[][]Calibration frequency: once in a year and after every maintenance.
[][]Check the time with calibrated and certified clock at 10, 20, 50, 70 and 90 minutes. The tolerance should be ± 1 minute.
[][]After completing the calibration, maintain the calibration record of Sieve shaker as per Annexure-I.

Annexure:

Annexure–I: Calibration Information Sheet for Electromagnetic Sieve Shaker.
Annexure–II: Operation logbook for Electromagnetic Sieve Shaker.
Annexure–III: List of Sieves.

Karl Fischer Titrator Calibration, Purpose:

Karl Fischer Titrator Calibration, The purpose of this SOP is to describe the operation, standardization of titrants, calibration, cleaning and maintenance of Karl Fischer Titrator (Model: Mettler Toledo V20 Compact) used for the determination of the water content in the quality control laboratory at XX Pharmaceuticals Ltd.

Karl Fischer Titrator Calibration, Scope:

This procedure is applicable to the Karl Fischer Titrator, used for the determination of water content, in the analysis of raw materials, intermediate and formulated drug product, installed in the quality control laboratory of XX Pharmaceuticals Limited.

Definitions/Abbreviation:

[][]SOP: Standard Operating Procedure
[][]QC: Quality Control
[][]KF: Karl Fischer

Responsibilities:

The roles and responsibility is as follows:

Officer/Executive/Sr. Executive,

[][]Quality Control
[][]To ensure that this procedure is followed.
[][]To maintain the records properly as per SOP.

Manager, Quality Control

[][]To ensure that this procedure is kept up to date.
[][]To confirm that the SOP is technically sound and reflects the required working practices.
[][]To arrange training on the SOP to all concerned personnel and to ensure implementation of the SOP after training.
[][]Schedule calibration of the instrument at the defined intervals.

Head of Quality Assurance

[][]Approval of the SOP.
[][]To ensure the overall implementation of the SOP.

Procedure:

Precaution(s):

[][]The equipment should not be set near to room heating equipment or direct sunlight.
[][]Use mask, gloves and safety goggles during handling the Karl Fischer reagent and methanol under Fume Cupboard.
[][]Do not change stirring speed between the pre-titration and the titration.
[][]Always take some more volume of liquid sample by a syringe and then inject the desired volume.
[][]Clean and dry syringes and needles before use. Rinse the syringe with the sample solution itself 2 – 3 times and then take the test sample. This will remove the moisture from syringe if any.
[][]While testing various samples of which the moisture contents are roughly known, test the sample having lowest moisture first and then go on to the next in order to avoid contamination.
[][]If moisture content of samples are unknown and very small sample to obtain pilot reading and then adjust the size of sample accordingly. Keep next sample ready and if some time is lapsed between two titrations. Press START, get to the end point then add sample immediately. This will eliminate the error due to lapse of time.
[][]If fresh KF reagent is added to the old stock in KF reservoir, mix the solution in reservoir properly and recalibrate the reagent for new factor.
[][]Keep the titration cell tightly closed with stopper and only open for an instant to add sample fast.
[][]When renewing the reagents, clean the titration cell thoroughly with methanol (or another suitable solvent) and may be dried in an even at approximately 70⁰C.
[][]Adjust the filling rate of dispensing burette to avoid the introduction of air bubbles in the burette.

Operation:

[][]Check the cleanliness of the instrument.
[][]Check the calibration status of the Karl Fischer Titrator.
[][]Check the clarity and color of the titrant.
[][]Switch ON the instrument. The instrument always performs a self-test before the display of the Titrator name appears.

Functional description:

[][]The control panel consists of an integrated touch screen and four additional keys, which are located next to the touch-sensitive surface of the display.
[][]Reset, the current task is aborted Info, calls to the online help for the current contents of the current dialog.
[][]Home, always returns to the Home screen (the blue Home keys are located at the bottom right and left of the touch screen).

Rinse and fill burette:

[][]To fill the burette and tubes with titrant and remove any air bubbles from the system, the burette should be rinsed three times with titrant. To do that, use the manual operation “Rinse burette”. Press Home if the home screen is not already displayed.
[][]Select the Manual button to open the Manual operations dialog and press Burette button.
[][]In the Burette dialog, use the Rinse button to access the parameters for the rinse process.
[][]Select the relevant titrant.
[][]For the “Cycles” parameter, enter “3” for three rinse cycles.
[][]Press Start to start the rinse procedure.
[][]When all rinse procedures will be completed, use the ok button to return to the Rinse dialog. The burette should be filled and the hoses should be free of air bubbles.

Filling the titration beaker:

[][]To fill the titration beaker with solvent, the solvent manager must be attached to the solvent bottle.
[][]In the Pump dialog (Home>Manual>Pump), select the “Fill” value for the “Action” parameter.
[][]The “Reset counter” parameter will be activated.
[][]Press Start.
[][]Titration beaker will be filled with solvent.

Performing a volumetric KF titration:

[][]Fill dried Methanol in glass vessel.
[][]In the Home screen, use the Methods button and select the method type “KF vol”. In the subsequent dialog, select the “Mix Time” and enter required time.
Select start button.
[][]Start analysis dialog will be displayed. In this dialog select Number of sample and put “3” and then press Ok.
[][]Select Start button. The system will perform a pre-titration as a basis for a water-free solvent.
[][]As soon as the continually determined drift value falls below a regulated required value, the system automatically switches to Standby mode. In the Standby mode the Start Concentration button will be activated.
[][]Press the Start Concentration button, weigh about 10 mg of purified water as a standard and add into the titration vessel and then enter the sample weight.
[][]Press Sample ID and put the sample ID.
[][]Confirm with Ok. The analysis will be started automatically.
[][]Perform 3 samples analysis and press Result>Statistic>Print.
[][]Average water content and relative standard deviation (RSD) of 3 samples will obtain on the print out.
[][]Standard value of RSD is not more than 2%.
[][]Press Reset and select start button.
[][]Start analysis dialog will be displayed.
[][]When Start button will be selected in the Start analysis dialog, the system first always performs a pre-titration as a basis for a water-free solvent.
[][]As soon as the continually determined drift value falls below a regulated required value, the system automatically switches to Standby mode. In the Standby mode the Start sample button will be activated.
[][]Press the Start sample button, add the sample and then enter the sample weight.
[][]Press Sample ID and put the sample ID.
[][]Confirm with Ok. The analysis will be started automatically.
[][]After completing titration, the Result dialog will be displayed and printed automatically.

Calibration:

[][]Fill dried Methanol in glass vessel.
[][]Select start button.
[][]Start analysis dialog will be displayed. In this dialog select Number of sample and put “3” and then press Ok.
[][]Select Start button. The system will perform a pre-titration as a basis for a water-free solvent.
[][]As soon as the continually determined drift value falls below a regulated required value, the system automatically switches to Standby mode. In the Standby mode the Start Concentration button will be activated.
[][]Press the Start Concentration button, weigh about 100 mg of Di-sodium tartrate dihydrate as a standard and add into the titration vessel and then enter the sample weight.
[][]Press Sample ID and put the sample ID.
[][]Confirm with Ok. The analysis will be started automatically.
[][]Perform 3 samples analysis and press Result>Statistic>Print.
[][]Average water content and relative standard deviation (RSD) of 3 samples will obtain on the print out.
[][]Standard value of RSD is not more than 1%.
[][]Record the result in the “Calibration Information Sheet for Karl Fischer Titrator” as per Annexure-I.
[][]Affix the label “CALIBRATED” on the instrument if all test results are satisfactory. If the calibration result is out of limit or any discrepancy is during calibration, affix “UNDER Maintenance” label and inform the respective supplier.
[][]Calibrate the instrument once in every six month.

Cleaning:

[][]After completion of the testing, press Drain>Start button for removing the solution from the test compartment and wash with methanol which is used for water determination. Wipe the knob of sample compartment with tissue paper.
[][]Switch ‘OFF’ the instrument and switch ‘OFF’ the mains.
[][]If the drift of the KF solution remains too high, fill the drying tubes with fresh molecular sieve or regenerate molecular sieve in a drying oven at 105 – 150⁰C for at least 24 hrs. Before regeneration rinse the molecular sieve used on the waste bottle with purified water as it contain SO2.
[][]Collect the waste solution into waste beaker at the same time all waste to be thrown to avoid corrosion.
[][]Clean the outer surface of the instrument with Isopropyl alcohol and dry it with tissue paper.

Annexure

Annexure-I: Calibration Information Sheet for Karl Fischer Titrator.
Annexure-II: Operation logbook for Karl Fischer Titrator.

Calibration of Refractometer, Purpose :

Calibration of Refractometer, The purpose of this SOP is to describe the operation, calibration and cleaning of Refractometer (Model: Rudolph J257) used for the determination of the refractive index of raw materials in the quality control laboratory at XX Pharmaceuticals Ltd.

Calibration of Refractometer, Scope :

This procedure is applicable to the Refractometer (Model: Rudolph J257), installed in the quality control laboratory of XX Pharmaceuticals Limited.

Definitions/Abbreviation:

[][]Standard Operating Procedure (SOP): A written authorized procedure, which gives instructions for performing operations.
[][]QC: Quality Control.
[][]Refractive index: The refractive index of a medium with reference to air is equal to the ratio of the sine of the angle of incidence of a beam of light in the air to the sign of the angle of refraction of the refracted beam in the given medium.

Responsibilities:

The roles and responsibility is as follows:

Officer/Executive/Sr. Executive, Quality Control

[][]To ensure that this procedure is followed.
[][]To maintain the records properly as per SOP.

Manager, Quality Control

[][]To ensure that this procedure is kept up to date.
[][]To confirm that the SOP is technically sound and reflects the required working practices.
[][]Arrange training on the SOP to all concerned personnel.
[][]To ensure implementation of the SOP after training.
[][]Schedule calibration of the instrument at the defined intervals.

Head of Quality Assurance

[][]Approval of the SOP.
[][]To ensure overall implementation of the SOP.

Procedure:

Precaution(s):

[][]Clean off samples with water and then with methanol or a suitable solvent as soon as the measurement is completed in a way to avoid possible scratching in the prism.
[][]Do not use the strong solvents such as N,N- Dimethylformamide or N,N-Dimethylacetamide, Cresol, Phenols and other tar acids.
[][]Never use any hard or metallic objects on the prism surface (where the sample to be measured is placed) as scratches quickly spoil the definition of the borderline.
[][]Disconnect the power supply before moving or cleaning of the instrument.
[][]When not in use, keep the instrument in a safe place.
[][]Prior to use, user must ensure that equipment is calibrated.

Operating procedure

[][]Check the machine is calibrated.
[][]Plug the instruments into an acceptable power source.
[][]Turn the instrument ON.
[][]Wait about 30 minutes to warm up the Refractometer.
[][]Carefully clean the polished surface of the fixed prism with water and then with methanol and dry before applying a sample.
[][]Place a few drops of sample on the polished face of the lower Measuring prism.
[][]Lower the sample cover.
[][]Select the option “measure when stable”.
[][]Press the “Read” button to obtain the sample reading.
[][]Take print out of the result.
[][]Record the operation in the logbook.

Calibration with Purified water, Carbon Tetra chloride and Toluene:

[][]Plug the instruments into an acceptable power source.
[][]Turn the instrument ON.
[][]Wait about 30 minutes to warm up the Refractometer.
[][]Carefully clean the polished surface of the fixed prism with water and then with methanol and dry before applying a sample.
[][]Determine the refractive index of the purified water, Toluene and Carbon Tetrachloride at 20°C.
[][]Place a few drops of sample on the polished face of the lower Measuring prism.
[][]Lower the sample cover.
[][]Select the option “measure when stable”.
[][]Press the “Read” button to obtain the sample reading.
[][]Take print out of the result.
[][]Compile the result & take approval for the calibration information sheet (Annexure-I).
[][]Affix the label “CALIBRATED” on the instrument if all test results are satisfactory.
[][]If the equipment found out of calibration limit affix “UNDER Maintenance” label and inform the respective supplier.
[][]Calibration frequency: Once in a year.

Cleaning procedure:

[][]After completion of the testing switch off the instrument and switch off the mains.
[][]Clean the prism surface with purified water or alcohol or xylene or a solvent which will remove sample residue.
[][]Finally clean with purified water.
[][]Wipe it with tissue paper.

Annexure:

Annexure-I: Calibration Information Sheet for Refractometer with Water, Carbon Tetrachloride and Toluene
Annexure-II: Logbook for Refractometer

Calibration of Viscometer, Purpose :

Calibration of Viscometer, The purpose of this SOP is to describe the operation, calibration and cleaning of viscometer (Model: Brookfield LVDV-II+Pro) used for the measurement of viscosity in the quality control laboratory at XX Pharmaceuticals Ltd.

Calibration of Viscometer, Scope :

This procedure is applicable to the Brookfield viscometer, installed in the quality control laboratory of XX Pharmaceuticals Limited.

Definitions/Abbreviation:

[][]Standard Operating Procedure (SOP): A written authorized procedure, which gives instructions for performing operations.
[][]Viscosity: Viscosity is measure of fluid’s resistance to flow.
[][]FSR: Full Scale Viscosity Range.
[][]cP: Centipoise

Responsibilities:

The roles and responsibility is as follows:

Officer/Executive/Sr. Executive, Quality Control

[][]To ensure that this procedure is followed.
[][]To maintain the records properly as per SOP.

Manager, Quality Control

[][]To ensure that this procedure is kept up to date.
[][]To confirm that the SOP is technically sound and reflects the required working practices.
[][]Arrange training on the SOP to all concerned personnel.
[][]To ensure implementation of the SOP after training.
[][]Schedule calibration of the instrument at the defined intervals.

Head of Quality Assurance

[][]Approval of the SOP.
[][]To ensure overall implementation of this SOP.

Procedure:

Precaution(s):

[][]To measure high viscosity, choose a small spindle or select slow speed.
[][]Remove spindle before cleaning.
[][]Prior to operation check the labeling of the viscometer. The label is adjusted using the two leveling screws on the base. Adjust so that the bubble label on the top of the instrument within the circle.
[][]Viscosity measurements should be accepted within the equivalent % of Torque Range from 10% to 100% for any combination of spindle/speed rotation.
[][]Viscosity measurements should be taken under laminar flow conditions, not under turbulent flow conditions.

Calibration procedure:

[][]Switch on the power from its main and power on the viscometer.
[][]Transfer the viscosity standard fluid (Standard Fluid 10, Standard Fluid 500 & Standard Fluid 5000) into 600 ml beaker.
[][]Immerse the beaker along with the spindle into water bath for 1 hour at set temperature 25.0°C.
[][]After 1 hour, check the temperature of the viscosity standard fluid with an accurate thermometer.
[][]Lower the DV-II+ into measurement position of the guard leg.
[][]Attach the spindle to the viscometer. In case of disk – shaped spindle, avoid trapping air bubbles beneath the disk by first immersing the spindle to an angle and then connecting to it to the viscometer.
[][]Measure the viscosity reading normally at 25.0°C ± 0.1°C, must rotate the spindle at least five times before readings are taken.
[][]The viscosity reading should be equal the cP value on the fluid standard to within the combined accuracies of the viscometer & viscosity standard i.e. ± (1% of full scale viscosity range + 1% viscosity Standard Fluid stated value at 25ºC).
[][]Calculate the Full scale viscosity is determined from following equation:
[][]Full scale viscosity [cP] = TK * SMC * 10000/ RPM
Where,
TK = spring torque constant of viscometer (for LVDV-II +Pro model TK value is 0.09373 )
SMC = spindle multiplier constant for spindle [SMC value for the four spindle LV1 (entry code: 61), LV2 (entry code: 62), LV3 (entry code: 63), LV4 (entry code: 64) and LV5 (entry code: 65) are respectively 6.4, 32, 128, 640 and 1280.] [][]RPM: Rotation per minute Compile the result & take approval for the calibration information sheet (Annexure-I).
[][]Carry out the test once in a year.
[][]Affix the label “CALIBRATED” on the instrument if all test results are satisfactory.
[][]If the equipment found out of calibration limit affix “UNDER Maintenance” label and inform the respective Supplier.

Operating procedure:

[][]Check the machine is clean & calibrated.
[][]Make the switch ON of the viscometer.
[][]Let the machine initialize for 10 minutes before performing Auto zero.
[][]Attach the spindle with the lower shaft of the viscometer.
[][]Set the spindle no. by pressing SELECT SPINDLE button.
[][]Set speed by pressing SET SPEED button.
[][]Select the data parameters by pressing SELECT DISPLAY button.
[][]Insert and center spindle in the test materials until the fluid’s level is at the immersion groove on the spindle‘s shaft.
[][]Press the motor ON/OFF/ESCAPE key and turn the motor ‘OFF’ when changing a spindle or changing samples.

Cleaning procedure:

[][]After completion of the testing switch ‘OFF’ the instrument and switch ‘OFF’ the mains.
[][]Remove the spindle from the instrument.
[][]Clean the spindle with respective solvent in which solution of sample is prepared.
[][]Clean the spindle with methanol.
[][]Wipe it with tissue paper.
[][]Place the clean spindle at its respective place in the box.

Annexure:

Annexure-I: Calibration Information Sheet for Digital Viscometer
Annexure-II: Calculation Sheet for Viscometer Calibration
Annexure-III: Range for LV Spindle cP (m PaºS )

Calibration of pH meter, Purpose :

Calibration of pH meter, The purpose of this SOP is to describe the operation, calibration and cleaning of pH meter (Model: Mettler Toledo Seven Compact S220) used for the measurement of pH in the quality control and microbiology laboratory.

Calibration of pH meter, Scope :

This procedure describes the application of pH meter, for the determination of pH, in the analysis of raw materials, intermediates and formulated drug product in the quality control and microbiology laboratory of xx Pharmaceuticals Ltd.

Definitions / Abbreviation:

[][]SOP: Standard Operating Procedure.
[][]QC: Quality Control.
[][]pH: The pH is a number which represents conventionally the hydrogen ion concentration of an aqueous solution. It is the measurement of the acidity or alkalinity of an aqueous solution.
[][]Calibration: The set of operations which establish, under specified conditions, the relationship between values indicated by a measuring instrument or measuring system or values represented by a material measure and the corresponding known values of a reference standard.
[][]KCl: Potassium chloride.

Procedure:

Precaution(s):

[][]Store the electrode in 3M KCl solution; never store it in distilled or demonized water or any solution containing heavy metal ions as it may block the electrode membrane.
[][]Always keep the pH electrode wet and rinse it thoroughly with the sample to be measured before use.
[][]Avoid high humidity environments and static discharges since these are detrimental for a stable pH reading.
[][]Do not measure pH of a solution with high temperature.
[][]Try to avoid special measuring solutions such as Sulphide, high Alkaline, Albuminous solutions those can reduce the life of electrode.
[][]Never stir the electrode vigorously in solution during measurement of pH.
[][]After washing, dry the electrode with tissue paper but do not wipe the end of with tissue paper.
[][]Never stir the electrode vigorously in solution during measurement of pH.
[][]After washing, dry the electrode with tissue paper but do not wipe the end of with tissue paper.
[][]Always use fresh and unused buffer for calibration.
[][]Perform a recalibration:
[][]When reference electrode is changed.
[][]After testing aggressive chemicals (such as strong acid or base).

Calibration:

[][]Switch on the power from its main.
[][]Power on the pH meter and printer.
[][]Remove the electrode from the potassium chloride (KCl) solution, rinse it with purified water and soak the excess water with tissue paper very carefully.
[][]Calibrate the instrument daily before use by the three buffer solutions of pH values 7.00, 4.00 and 10.0.
[][]Immerse the electrode in buffer solution of pH value of 7.00 and stir gently and press [CAL] .
[][]Wait until a stable endpoint has been reached.
[][]Hear the ‘beep’ point.
[][]See the sign (/A) at the right side of the display.
[][]Rinse the electrode with purified water and soak the excess water with issue paper very carefully.
[][]Repeat the steps from 7.1.5 to 7.1.9 for second and third calibration for the standard solution of pH values respectively 4.00 and 10.00.
[][]Select “End”.
[][]Select “Save”.
[][]Select “Data”.
[][]Select “Calibration Data”.
[][]Select “pH”.
[][]Select “Review”.
[][]Select “Expertpro ISM”.
[][]Select “Transfer”.
[][]Select “Exit” for 5 times to reach the main menu.
[][]The slope should be 90% – 105%, i.e. at print data, S(B1/B2) and S(B2/B3) = 90% – 105% and offset value will be ± 30 mV, i.e. at print data, off.(B1/B2) and off.(B2/B3) = ±30 mV.

Electrode condition:

Maintenance of the Reference Electrode:

[][]If the electrode slope value falls rapidly, or if the response becomes sluggish or inaccurate, the following procedure should be performed one by one.
[][]Change the reference electrolyte solution every six months.
[][]Degrease the membrane with cotton wool soaked in soap solution.
[][]Soak the tip of the electrode in 0.1M hydrochloric acid overnight.
[][]If all these fail, the electrode must be replaced with a new electrode.
[][]Any replacement of the electrode must be recorded in the log book
[][]Verify the pH of any check buffer (buffer range: 4-9 pH), if reading is within limit (Certificate value ± 0.05), calibration confirms.
[][]Remove the electrode from buffer solution, rinse it with purified water and soak the excess water with tissue paper.
[][]Rinse the electrode with saturated potassium chloride (KCl).
[][]7.1.26 Record the calibration status in Logbook for daily calibration of pH Meter (Seven Compact S220) as per Annexure – I
[][]Power off the pH meter and printer.
[][]Switch off the power from its main.

Operation

[][]Ensure that working area is clean.
[][]Pour enough sample solution into a measuring beaker so that the level of the sample is above the junction of the electrode.
[][]Ensure that the pH meter is cleaned and calibrated on the day use.
[][]Remove the electrode from the potassium chloride (KCl) solution, rinse it with purified water and soak the excess water with tissue paper very carefully. .
[][]Switch on the power its main.
[][]Power on the pH meter and printer.
[][]Gently stir the sample and dip the pH electrode into the solution.
[][]Press [READ] button and wait until a stable endpoint has been reached.
[][]Hear the “beep” sound.
[][]See the sign (/A) at the right side of the display.
[][]Select “Data”.
[][]Select “Measurement Data”.
[][]Select “Review”.
[][]Select “Partial” by using “↓”.
[][]Select “by measurement mode” by using “↓”.
[][]Select “pH”.
[][]Select “transfer”.
[][]Collect the printed result from the printer.
[][]Select “Exit” for 6 (six) times to reach the main display/menu.
[][]Take the electrode out of the solution and rinse with purified water and soak the excess water by tissue paper.
[][]For additional samples repeat the steps from 7.2.7 to 7.2.20 until the sample has been measured.
[][]After taking the measurement, rinse the electrode with saturated potassium chloride (KCl).
[][]Record the measurement data in the Operation Logbook of pH Meter (Seven Compact S220) as per Annexure – II.
[][]Power off the pH meter and printer.
[][]Switch off the power from its main.

Cleaning and maintenance:

[][]Clean the outside case of the pH meter using a mild detergent or disinfectant (e.g.70% ethanol) if required.
[][]Clean the area around the pH meter and wipe away any spillage immediately. Special care should be exercised when cleaning up concentrated HCl (usually) or concentrated NaOH (usually) used for adjusting the pH of solutions.
[][]When required, clean all wires and contacts to avoid corrosion.
[][]Inspect the cables of the electrodes for any signs of broken insulation.
[][]Inspect the pH electrode for any cracks in its stem or bulb.
[][]Rinse off any salt deposits on the top of the electrode using water.
[][]If contamination of the glass bulb is suspected, restoration can be attempted as follows:
[][]Soak electrode in 0.1 M HCl or 0.1 N HNO3 for 15 minutes.
[][]Oily or greasy deposits may be removed by methanol.
[][]After the cleaning stage, rinse the electrode in distilled water and replace the internal filling solution (4M KCl if appropriate) for at least 1 hour before taking any measurements.
[][]Make sure the electrode is always kept filled with the appropriate filling solution.

Annexure: Calibration of pH meter

Annexure-I: Logbook for daily calibration of Seven Compact S220 pH Meter.
Annexure-II: Operation Logbook of Seven Compact S220 pH Meter.

Calibration of FTIR, Purpose:

Calibration of FTIR, The purpose of this SOP is to describe the operation, calibration and cleaning of FTIR Spectrophotometer (Shimadzu, IR Affinity-1) used in the quality control laboratory at XX Pharmaceuticals Limited.

Scope

This procedure is applicable for FTIR Spectrophotometer (Shimadzu, IR Affinity-1), installed in the quality control laboratory of XX Pharmaceuticals Limited.

Definitions / Abbreviation:

Standard Operating Procedure (SOP): Standard Operating Procedure. A written authorized procedure, which gives instructions for performing operations.

[][]QC: Quality Control.

[][]FTIR: Fourier Transform Infrared.

Responsibilities

[][]Executive/ Sr. Executive, QC

[][]To ensure that this procedure is followed.

[][]To maintain the records properly as per SOP

Manager, Quality Control

[][]To ensure that this procedure is kept up to date.
[][]To confirm that the SOP is technically sound and reflects the required working practices.
[][]To arrange training on the SOP to all concerned personnel and to ensure implementation of the SOP after training.
[][]Schedule calibration of the instrument at the defined intervals.

Head of Quality Assurance

[][]Approval of the SOP.
[][]To ensure the overall implementation of the SOP.

Procedure: Calibration of FTIR

General Procedure:

[][]Ensure that the instrument is clean and calibrated.
[][]Connect the instrument properly with the power supply.
[][]Switch “ON” the main switch, power switch of the instrument situated at the backside panel, printer and computer.
[][]Allow the instrument initialize for at least 1 hour.

Disk preparation for solid sample:

[][]Mix 5 to 10 mg of sample with 200 to 400 mg of Potassium Bromide (KBr) [IR Grade].
[][]Grind the mixture to very fine powder with agate mortar.
[][]Pour the mixture into the barrel and carefully insert the plunger with its polished face downward.
[][]Maintain the hydraulic pressure 50 KN to 60 KN of the barrel for 1-2 minutes.
[][]Release the pressure and take out the disk from the barrel.
[][]For sample of liquid material using sealed liquid cell:
[][]Inject the liquid sample (pure or in solution) in sealed liquid cell.
[][]Plug to close both the slots of sealed liquid cell.
[][]For sample of liquid material which converted to solid (Nujol preparation) and measurement using NaCl demountable liquid cell:
[][]Put the cell window on the cell window holder and place the spacer of appropriate thickness on the cell window.
[][]Take 3 to 5 mg of sample with 2 to 3 drop of Nujol in a mortar and mix properly.
[][]Insert sample inside the spacer with a spatula. Put another cell window on the spacer and fit the metal plate on it.
[][]Fasten those plates with the four screws. Do not fix them with excessive force. It is enough to fasten them tightly by hand.

Operation Procedure (FTIR): calibration of FTIR

[][]Double click on “IRsolution” software icon.
[][]Press Measure
[][]Select FTIR Parameters in parameter window as follows:
[][]Data :
[][]Measurement Mode: % Transmitance ,
[][]Resolution: 2
[][]Apodization: Happ-Genzel
[][]No of Scans: 10
[][]Range (cm-1): Min: 400 cm-1 Max: 4000 cm-1
[][]Instrument:
[][]Beam: Internal
[][]Detector: Standard
[][]Mirror speed: 2.8
[][]More:
[][]Mode: Power
[][]Remove sample, if any, from the sample compartment.
[][]Click on Measurement then “Initialize” then “Yes”.

[][]After successful initialization, click BKG then “OK”. Wait till window on the screen is displayed as last Bkg.
[][]After ‘Bkg scan’, put the sample disk in the sample chamber, with the help of sample holder and close the chamber.
[][]Enter the Sample name, Batch No., Sample ID. in comment box and enter the data file location in Data file box.
[][]Click Sample to measure sample. Wait till the actual sample IR scan is displayed.
[][]Click on the spectrum window. Select Calculate  peak table. Type threshold: 60.00.
[][]Click on Calc, OK
[][]Compare the Spectrum in computer screen. View the IR scan of standard, click on Manipulation 2 then “Purity” then “Yes”.
[][]Again view the IR scan of sample, click on Manipulation 2  “Purity”  “Calc”  “OK”.
[][]After comparison with standard and sample then click file and open file as required. Then click Window  “Join visible”  “Calc”  “OK”.
[][]Purity index should be within 0 .9500 – 1.0000.
[][]A disc is rejected if visual examination shows lack of uniform transparency or when transmittance at about 2000 cm-1 (5 µm) in the absence of a specific absorption band is less than 60 % without compensation, unless otherwise prescribed in individual monograph.
[][]For printing of spectrum, click File  “Print preview”. Select respective necessary template and then print.
[][]Close the parameter window and the Software window.
[][]Shutdown PC, switch off Printer.
[][]Power OFF Spectrophotometer.
[][]Take out the liquid cell from the instrument.
[][]Discard the disk /Nujol / liquid sample.
[][]Clean the holder and liquid cell with dry and clean tissue paper.
[][]In case of sealed liquid cell mop and wash with IPA or absolute Ethanol and in case of demountable liquid cell mop and wash with Chloroform or Carbon Tetrachloride.
[][]Keep them in specified desiccator.
[][]Rub mortar, pestle, barrel & plunger with tissue paper to make them free from dust.
[][]Mop them with a tissue paper soaked in absolute ethanol.
[][]Keep them in a desiccator for next operation.
[][]Record all analysis in operation log book as per Annexure-II.

Operation Procedure (ATR):

Running a sample:

[][]Turn on the computer and crick on the respective software on the desktop.
[][]Set the MIRacle/ MIRacle A Base Unit to the instrument.
[][]Before initialization, set FTIR Parameters in parameter window as follows:
[][]Data :
[][]Measurement Mode: % Transmitance ,
[][]Resolution:2
[][]Apodization: Happ-Genzel
[][]No of Scans: 10
[][]Range (cm-1): Min : 700 cm-1 Max : 4000 cm-1
[][]Click on Measurement then “Initialize” then “Yes”. Click “cancel” option for auto adjustment.
[][]Click on Measurement then “Auto adjustment (Fine)” then “Yes”.
[][]After autoadjustment, click BKG then “OK”. Wait till window on the screen is displayed as last Bkg.
[][]Set the clamp to the base. Place sample on the ZnSe crystal- Liquids -place a drop of sample on the ZnSe crystal. Place a small neat solid sample on the ZnSe crystal with a spatula. Adjust the knob of the ATR until the pressure reads 12.
[][]Make sure that no acid sample (pH below 5), strong alkaline sample (pH more than 9) or liquid which give damage to PTFE should not be place on ZnSe prism.
[][]Enter the Sample name, Batch No., Sample ID. in comment box and enter the data file location in Data file box. Click Sample to measure sample. Wait till the actual sample ATR scan is displayed.

Working up the Data:

[][]Compare the Spectrum in computer screen. View the ATR scan of standard, click on Manipulation 2 then “Purity” then “Yes”.
[][]Again view the ATR scan of sample, click on Manipulation 2  “Purity”  “Calc”  “OK”.
[][]After comparison with standard and sample then click file and open file as required. Then click Window  “Join visible”  “Calc”  “OK”.
[][]For printing of spectrum, click File  “Print preview”. Select respective necessary template and then print

Calibration:

[][]Calibrate the FTIR Spectrophotometer at 6 month’s frequency either by following procedure or as per supplier’s protocol:
[][]Power ON the Spectrometer. Wait for at least 1 hour. Power ON PC & Printer.
[][]Double click on “IRsolution” software icon. Press Measure
[][]Select FTIR Parameters in parameter window as follows:
[][]Data :
[][]Measurement Mode: % Transmitance ,
[][]Resolution : 2
[][]Apodization : Happ-Genzel
[][]No of Scans : 10
[][]Range (cm-1) : Min : 400 cm-1 Max : 4000 cm-1
[][]Instrument :
[][]Beam : Internal
[][]Detector : Standard
[][]Mirror speed : 2.8
[][]More :
[][]Mode : Power
[][]Remove sample, if any, from the sample compartment.
[][]Click on Measurement then “Initialize” then “Yes”.
[][]After successful initialization, click BKG then “OK”. Wait till window on the screen is displayed as last Bkg.
[][]After ‘Bkg scan’, place the Polystyrene film in the sample chamber and close the chamber.
[][]Enter the Polystyrene 1 and Wave number verification in comment box and enter the data file location in Data file box.
[][]Click Sample to scan the polystyrene film (0.05 mm thick). Wait till the actual sample IR scan is displayed.
[][]Click on the spectrum window. Select Calculate  peak table. Type threshold: 65.00.
[][]Click on Calc  OK
[][]For printing of spectrum, click File  “Print preview”. Select respective necessary template and then print. Collect Polystyrene spectrum and peak table printed in two pages.

Limit of Wave Number Accuracy

[][]Check the maximum at following wave numbers (cm-1): 3060.0 (±1.5) cm-1, 2849.5 (±1.5) cm-1, 1942.9 (±1.5) cm-1, 1601.2 (±1.0) cm-1, 1583.0 (±1.0) cm-1, 1154.5 (±1.0) cm-1, 1028.3 (±1.0) cm-1.
[][]Resolution of apparatus
[][]Resolution due to transmittance:
[][]Record the Spectrum of a polystyrene film of approximately 35 µm thickness using Measuring Mode: % T.
[][]Measure the percentage transmittance at the transmission maximum at 2870 cm-1 (3.48 µm) and that at the transmission minimum at 2849.5 cm-1 (3.51 µm).
[][]Measure the percentage transmittance at the transmission maximum at 1589 cm-1 (6.29 µm) and that at the transmission minimum at 1583 cm-1 (6.32 µm).
[][]Record the results in calibration information sheet as per Annexure-I.

Acceptance criteria:

[][]The difference between the % transmittance at the transmission maximum at 2870 cm-1 (3.48 µm) and that at the transmission minimum at 2849.5 cm-1 (3.51 µm) must be greater than 18.
[][]The difference between the percentage transmittance at the transmission maximum at 1589 cm-1 (6.29 µm) and that at the transmission minimum at 1583 cm-1 (6.32 µm) must be greater than 10.

Resolution due to Absorbance:

[][]Record the Spectrum of a polystyrene film of approximately 35 µm thickness using Measuring Mode: Abs.
[][]Measure the absorbance at the absorption minimum at 2870 cm-1 and the absorption maximum at 2849.5 cm-1.
[][]Measure the absorbance at the absorption minimum at 1589 cm-1 and the absorption maximum at 1583 cm-1.
[][]Record the results in calibration information sheet as per Annexure-I.

Acceptance criteria:

[][]The difference between the absorbance at the absorption minimum at 2870 cm-1 and the absorption maximum at 2849.5 cm-1 is greater than 0.33.
[][]The difference between the absorbance at the absorption minimum at 1589 cm-1 and the absorption maximum at 1583 cm-1 is greater than 0.08.
[][]If the calibration is not within the specified standards, check the cleanliness of polystyrene film again and repeat the calibration.
Wavelength Repeatability Test:
[][]Repeat the Spectrum of the polystyrene film and Superimposed one after another of the absorption bands at 2849.5 cm–1 (3.51 µm), 1601.2 cm–1 (6.25 µm), 1028.3 cm –1 (9.72 µm).
[][]Acceptance Criteria: Compare the difference within 0.5% of the wave number scale and Purity index should be within 0.9500 – 1.0000
[][]Affix the label “CALIBRATED “on the equipment if all results are satisfactory. If the equipment found out of calibration limit affix “NOT FIT FOR USE” label and inform supplier.

Cleaning procedure:

[][]Clean the instrument with clean dry cloth daily.
[][]Remove your sample from the ATR, by using a cloth that is damped with acetone.
[][]Clean the plunger in the same way, if it made contact with sample.
[][]Never squirt (spray) acetone directly on the platform.

Annexure: Calibration of FTIR

Annexure-I: Calibration Information Sheet for FTIR Spectrophotometer
Annexure-II: Operation Logbook for FTIR Spectrophotometer