The nist reference thermometer should read 32 f 0 c when placed in the slush ice bath.
Thermometer calibration procedure australia.
Alternatively purchase a new thermometer.
Probe thermometer calibration should be listed as a regular activity in your food safety plan.
While thermometers are comparatively simple instruments the consequences of a badly calibrated thermometer can result in freezers being too warm or furnaces not being hot enough.
The steps for hot calibration are as follows.
If the reference thermometer is not equilibrating to 32 f 0 c slush ice bath start over with a clean beaker of crushed ice and distilled water.
Place your thermometer into the container.
For the ice slurry method the reading should be zero degrees celsius.
Boil tap water and pour into a suitable container such a mug or beaker step 2.
If the temperature readings are higher than 1 c or lower than 1 c attach a label to the thermometer showing the date the calibration check was made and the variation from 0 c.
It is best to calibrate your infrared thermometer at more than one temperature at 41 f 5 c and 140 f 60 c for example and the infrared comparator cup makes it easy.
For the boiling water method sit your food thermometer in boiling water.
Two of the most acceptable methods to check the accuracy of your food thermometers is by boiling water and an ice water slurry.
Objective to describe the calibration procedure for distribution of temperature within the chamber of refrigerator.
If neither an industrial black body or a comparator cup are available however you can do a quick calibration using a properly made ice bath.
Accountability head quality control procedure.
There are two methods for thermometer calibration hot calibration and cold calibration.
To calibrate your thermometer using the ice point calibration method follow these steps.
Do not soak the thermometer in water or other liquids.
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His sop shall be applicable for calibration of refrigerator at pharmaceutical industries.
Operate the refrigerator as per standard procedure.
If the temperature is above 32 f 0 c add more crushed ice to the beaker.
A digital thermometer calibration procedure.
If consecutive readings are not within 0 5 c replace or service the thermometer.
Fill a plastic container with crushed ice.
Laboratories clinics and hospital facilities rely on the accuracy of their digital thermometers every day.
