• Ice Bath Calibration Check Procedure

Question 1

Prepare the ice bath. You need about 1/2 ice to water.

Answer 1

1

Question 2

. Move the digital and air thermometers, as well as any meter probes, to the ice bath. Stir the ice
water continuously. You are looking for the digital thermometer to read as close to zero as
possible. If it is warmer, add more ice and mix.

Answer 2

2

Question 3

Check the electronic meters again for stability and record the water temperatures to the
nearest 0.1 degree. Again, you will also record the NIST thermometer for comparison. Stir the
water to maintain even temperatures, adding ice if you move above zero on the digital
thermometer

Answer 3

3

Question 4

. Now record the stick thermometer readings on the data sheet, to the nearest whole degree,
keeping the tips in the water while you take the readings. Make sure the data sheet is completely
filled in with your initials and the date.

Answer 4

4

Question 5

. Notify staff of any instrument that doesn’t pass its QC test*

Answer 5

5

Question 6

Put any unused ice back into the freezer.

Answer 6

6

Question 7

. File your data sheet in the calibration notebook behind the “completed data sheets” tab, with
the most recent data sheet on top

Answer 7

7

Question 8

*Electronic sensors must match within

Answer 8

0.2 degrees of the NIST

Question 9

*Stick thermometers must match within

Answer 9

1 degree of NIS