SOP - STANDARDISATION OF THERMOMETERS
1.0 OBJECTIVE To ensure that the thermometers give accurate and reproducible temperature reading. 2.0 SCOPE This SOP Covers Standardisation procedure of thermometer and is applicable to Quality Control Department. 3.0 RESPONSIBILITY Officer / Executive. 4.0 ACCOUNTABILITY Department Head. 5.0 PROCEDURE 5.0.1 The thermometer for calibration shall be mercury in glass type. 5.0.2 Take a 500 ml beaker filled with about 400 ml of Silicon Oil. Use water for (0-50oC) and Silicon Oil for the temperature above 50oC. 5.0.3 Place the beaker on a bath fitted with a stirrer. The stirrer shall be dipped in the beaker leaving about 2 cm space from the bottom of beaker. 5.0.4 Immerse the standard thermometer certified by Approved Laboratory, into the Silicon Oil vertically approx. 8.0 cm leaving the remainder of the stem and the ...