SOP FOR IR MOISTURE BALANCE | STANDARD OPERATING PROCEDURE CLEANING, OPERATION & CALIBRATION OF IR MOISTURE BALANCE

 1.0           OBJECTIVE

To lay down the procedure for operation of IR Moisture Balance.

2.0             SCOPE

This SOP shall be applicable to IR Moisture Balance used in QC Dept.

3.0              RESPONSIBILITY

3.1              Chemist QC and above shall be responsible for the preparation and execution of this SOP.

3.2              Sr. Chemist QC & above and QA Head shall be responsible for the checking and approval of this SOP.

4.0              ACCOUNTABILITY

 Head QC

5.0              PROCEDURE

5.1              Cleaning

5.1.1      Ensure that power supply to the IR Moisture Balance is switched ‘OFF’ before cleaning and the plug shall be removed from the socket.

5.1.2        IR Moisture Balance shall be kept on a clean table/platform.

5.1.3        Platform of IR Moisture Balance shall be wiped with a dry lint the free cloth on a daily basis so that there will be no dust particles on the IR Moisture Balance.

5.2              Operation

5.2.1        Ensure that the power supply to IR Moisture Balance is switch “ON”.

5.2.2        Ensure that the visible light shall be “ON” for visualization of scale reading.

5.2.3        Ensure that Set the Zero % coincidence and 100 % by rotating the knob in such a way that the marked line, the pointer, and the 100 % mark shall be coinciding with one another.

5.2.4.      Ensure that raise the lamp housing and care shall distribute the test material on the sample pan until the Pointer returns to the index.

5.2.5        Ensure that lower the lamp housing and shall be turned on the infrared lamp by means of the toggle switch (left side).

5.2.6         Ensure that readjust the auto-transfer control to the proper setting for the specific material shall be tested. If the proper drying temperature (and therefore the auto transfers setting) is unknown, It shall be determined for each different material and this shall be accomplished by following the trial and error method.

5.2.7        Ensure that a sample of the specific material to be tested shall be place on the sample pan.

5.2.8        Ensure for the setting of the auto transfer control, at an arbitrary setting and shall be turned on the infrared lamp.

5.2.9        The results shall be observing.

5.2.10    Ensure for the discolorations or smoking of the sample, caused by excessive heat indicates the release of volatile oil other than moisture, and the sample yields erroneous results. Repeat the trial at a reduced setting until the proper drying temp. shall be determined. 

5.2.11    Ensure that the main switch of the instrument shall be “OFF” after testing.

5.2.12    Calibration Procedure

Calibration of IR Moisture The balance shall be done by the external party on an annual frequency.

6.0              REFERENCES

Not Applicable

7.0              ANNEXURE

Not Applicable

8.0              ABBREVIATIONS

SOP         :           Standards Operating Procedure

QC           :           Quality Control

HOD        :           Head of the Department

QA           :           Quality Assurance

QCD        :           Quality Control Department

QAD        :           Quality Assurance Department

EQP         :            Equipment

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