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Operation, Cleaning and Calibration of water bath

 

 

Operation, Cleaning and Calibration of water bath

 

 

1.0 OBJECTIVE

1.1 To lay down a procedure for Operation, Cleaning and Calibration of water bath.

2.0 SCOPE

2.1 This procedure is applicable for Cleaning ,Operation and Calibration of water bath in Quality Control Department

3.0 RESPONSIBILITY
3.1 QC Officer or QC Executive

4.0 ACCOUNTABILITY
4.1 QC Manager

5.0 PROCEDURE (for operation and cleaning)


5.1 Check general cleanliness of the water bath and clean outer surface by lint free cloth .

5.2 Fill the purified water up to two third part of the water bath to properly dip the coil of heater.

5.3 Switch “ON” the main electric supply followed by switch “ON” the instrument, red indicator will glow on.

5.4 Adjust the temperature of the bath with temperature controller knob as per requirement.

5.5 When the required temperature of the bath reaches, the green light will be “OFF”

5.6 When a fix temperature is required for analysis then check the temperature with the help of calibrated
thermometer for verification.

5.7 Place the flask or beaker-containing sample on the bath as per the size & requirement for complete digestion .

5.8 When the operation completed switch “OFF” the instrument followed by switch “OFF” the main electric supply.

5.9 Remove the sample container from water bath carefully .

5.10 Maintained the record.


5.11 CALIBRATION

5.11.1 Operate the water bath according to procedure 5.1 to 5.6

5.11.2 Set temperature at 35°C and wait till temperature reaches, Take suitable calibrated thermometer and measure the temperature after, 1 hour , 2 hours and 3 hours.

5.11.3 Repeat the same procedure 5.11.2 for temperature 90°C.

5.11.4 Note down the observed temperature in Annex I.

5.12 Frequency

5.12.1 Three months.

5.13 Acceptance Criteria

5.13.1 For temperature 35°C = ± 2°C.

5.13.2 For temperature 90°C = ± 2°C.

5.14 Precautions

5.14.1 Ensure that there is sufficient water in water bath.

5.14.2 Instrument should be clean & free from dust.


6.0 ABBREVIATION

Abbreviation used

Extended form

SOP

Standard Operating Procedure

No.

Number

°C

Degree Centigrade

QC

Quality Control

QA

Quality Assurance

Annex

Annexure




Annexure-1

Calibration record of water Bath


Instrument ID: Date:

CALIBRATION DATE

Thermometer
ID. No. of Thermometer :
Thermometer Calibrated On :
Thermometer Calibration Due :

CALIBRATION DATA

Abbreviation used

Extended form

SOP

Standard Operating Procedure

No.

Number

°C

Degree Centigrade

QC

Quality Control

QA

Quality Assurance

Annex

Annexure

Calibration Status: The Instrument is calibrated as per Schedule/After Maintenance/Other (Specify) _________________ and

complies/does not comply with the predefined acceptance criteria and is suitable/not suitable for the routine usage.

Frequency: Quarterly (± 7 Days of Schedule date)

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