A manager calibrates a bimetallic stemmed thermometer using the ice-point method. What reading should it show?
a.28°F in a cup of crushed ice with water
b.32°F in a cup of crushed ice with water
c.38°F in a cup of crushed ice with water
d.41°F in a cup of crushed ice with water
Giải thích
In an ice-point calibration the stem sits in a slurry of crushed ice and water and the dial is adjusted to read 32°F. Food temperature measuring devices must be calibrated according to the manufacturer's specifications as often as needed to stay accurate, and a dropped thermometer should be checked immediately.
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