Thermometer Calibration Procedure Laboratory

14 issue 2 thermometers are one of the most common types of equipment in a laboratory but it is important.

Thermometer calibration procedure laboratory.

Place certified calibrated thermometer and thermometer to be calibrated in a beaker of sand. Thermometer calibration for use in cold process and products ice water method an easy way to calibrate your thermometer is to put it in ice water and adjusting it to read. Record the results using actual values on the thermometer calibration log along with the date and initials of the person performing the calibration procedure. 5 2 10 standard thermometers shall be sent for re standardization based on the calibration certificate given by the approved laboratory.

Refer to the point check calibration of laboratory thermometers record book to determine which thermometers excluding vendor calibrated equipment in attachment 1 are currently in use in the laboratory. 5 2 8 the thermometer shall have an identification number and standardization date labeled on it. Procedure and analysis 12 1 vendor calibration a. Heat the beaker of sand with thermometers in an oven to desired range.

Thermometers in the instrument being monitored until the de ionized water or ethanol reaches the temperature of interest. Thermometer calibration procedure. Take readings from calibrated thermometer and thermometer to be calibrated at selected points and compare the readings. Hb 145 was developed as a source of calibration procedures for weights and measures laboratories and covered mass length and volume calibrations for field.

Performance calibration and verification of laboratory testing equipment to ensure compliance with iso iec 17025 2017 and aoac requirements. 10 5 any difference in temperature readings between the nist traceable thermometer and the laboratory thermometer is recorded on the point check calibration of laboratory thermometers record form see 16 0. Meeting the criteria in this procedure demonstrates. Taylor and henry v.

Materials necessary to calibrate a thermometer for cold. North carolina state laboratory of public health laboratory improvement unit june 2018 vol. A similar calibration procedure can be used for thermometers intended to be used in cold processes and products. Nbs handbook 145 1986 handbook for the quality assurance of metrological measurements by john k.

Refer to attachment 1 for inventory of thermometers requiring vendor calibration. Nonadjustable thermometers will be removed from use until they have been professionally serviced.