Quick Answer: Charles Law Apparatus (Combined), also known as Jolly's apparatus, shows how the pressure of a given mass of gas changes with temperature at fixed volume. It has a 0-100 cm scale and is supplied without mercury.
Last updated: October 2026
Key Features
Jolly's air bulb joined to a glass mercury reservoir by flexible rubber tubing
Reservoir tube on a sliding bracket that can be set anywhere along the vertical rod
Meter rule with scale 0-100 cm x 1 mm, read in both directions
Polished wooden stand on a heavy cast metal base with levelling screw
Supplied without mercury
Technical Specifications
Specification
Value
Scale
0-100 cm x 1 mm, read in both directions
Air bulb
Jolly's type
Reservoir mounting
Sliding bracket on vertical support rod
Stand
Polished wooden, heavy cast metal base with levelling screw
Mercury
Not supplied
About This Product
In Properties of Matter practicals the reservoir is moved on its sliding bracket while the temperature of the air in the bulb changes, and the levels are read directly against the meter rule.
Frequently Asked Questions
Q1. Is mercury included? No. The apparatus is supplied without mercury.
Q2. What scale is fitted? A meter rule graduated 0-100 cm x 1 mm, fixed on the stand and readable in both directions.
Lab Equipments Ambala exports to 80+ countries, including Gabon, Portugal and Cabo Verde.
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