To check the temperature leads of an electronic thermometer for low temperature, they should be stirred in a container of ____.
A) crushed ice and water with 1/2 teaspoon of salt added
B) crushed ice and water with 1/2 teaspoon of sugar added
C) crushed ice and pure water
D) cube ice and pure water

Question

Quizplus · Accepted Answer

Crushed ice and pure water create a mixture that is in equilibrium at 0°C (32°F), which is a standard reference temperature for calibrating and checking thermometers. The mixture of crushed ice and pure water ensures a stable and uniform temperature environment. Salt or sugar would lower the freezing point of water, and cube ice would not ensure as efficient thermal contact as crushed ice.

To Check the Temperature Leads of an Electronic Thermometer for Low