To validate the Heating block using calibrated thermometer.
This procedure is applicable to validate the heating block which is to be used for LAL test .
3.1 Doing : Technical Assistant (Microbiologist)/Executive
3.2 Checking : Executive/Manager
Head of the Department
5.0 PROCEDUREFrequency : Every Month
5.1 Take 5 calibrated thermometer and give them No. L1, L2, L3, L4, L5 as mentioned in annexure.
5.1 Keep five thermometer in test tubes at different location inside well of heating block as per location chart enclosed.
5.2 Operate Heating block as per S.O.P.
5.4 Compare temperature of each thermometer with respect to temperature adjusted one on heating block at every 15 minutes interval upto 1 hours.
5.5 Record the result as per annexure.
5.6 Acceptance Criteria :Temperature on display should be within 37°C + 1°C.
5.7 The results obtained at all location of heating block should be within 36 to 38°C.
5.8 Change the location by placing thermometer in other than previously selected location to cover maximum well during validation in a calendar year.
oC = Degree centigrade
Heating Block Validation
Thermometer ID. NO.
Temperature on display
Acceptance Criteria : 37°C + 1°C
Analyst Checked by
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