Calibrating a
Thermometer

It is normal for inexpensive thermometers to be off by a few degrees.

You should test every new thermometer against known temperatures (freezing and boiling point of pure water). Then you will know how much to compensate when taking readings.

Use pure water to be sure it freezes at 0 C and boils at 100 C.

Remember that boiling point is affected by elevation above sea level.

Thermometers, Dual Scale

Celsius and Fahrenheit scales.
Student grade, Glass with Red Spirit (Alcohol)
Length approx. 12 inches (30 cm)

Partial Immersion

Dual Scale, -20 to 110 C and 0 to 230 F
#C850...............$3.20 each

Dual Scale, -20 to 150 C and 0 to 300 F
#C852..............$3.25 each

Total Immersion

Dual Scale, -20 to 110 C and 0 to 230 F
#C851........... $3.30 each

Dual Scale, -20 to 150 C and 0 to 300 F
#C853............$3.35 each

Thermometer Clamp
for use with a Support Stand C140, C150, etc. (Stand sold separately).
$8.25 ea.

Safety reminder: Glass thermometers are fragile. Wear safety goggles.
Never heat a thermometer above its maximum temperature reading.

Beakers

Clamps & Stands

Droppers

Erlenmeyer Flasks

Litmus & pH papers

Microscope slides

Microscopes

Spot plates

Stir rods

Test tubes