Quick Answer: Charles Law Apparatus, Basic is a U-shaped glass tube of about 15 mm diameter with a limb graduated 25 to 35 x 0.2 ml, contained in a 1000 ml tall-form beaker with stirrer.
Last updated: October 2026
Key Features
U-shaped glass tube of about 15 mm diameter
Plain limb 220 mm long; graduated limb 120 mm long, marked 25 to 35 x 0.2 ml and ending in a 37 mm bulb
Third limb, about 185 x 6 mm (length x bore), at right angles to the other two
Short rubber tubing with two pinch clips on a glass tube fitted by rubber bung in the wide-bore plain limb
Contained in a tall-form beaker of 1000 ml capacity, with stirrer
Technical Specifications
Specification
Value
U-tube diameter
About 15 mm
Plain limb
220 mm long
Graduated limb
120 mm long, 25 to 35 x 0.2 ml
Bulb
37 mm diameter
Third limb
About 185 x 6 mm (length x bore)
Beaker
Tall form, 1000 ml, with stirrer
About This Product
As its name indicates, this Properties of Matter apparatus is used for Charles' law work: the tube sits inside the tall-form beaker, the stirrer keeps the surroundings mixed, and the gas volume is read on the 0.2 ml graduations.
Frequently Asked Questions
Q1. What range does the graduated limb cover? It is 120 mm long, graduated from 25 to 35 in 0.2 ml divisions, and ends in a bulb of 37 mm diameter.
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