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Charles Law Apparatus (Combined) Manufacturer,Supplier and Exporter in India

Product Code : ILS-POM-10876

Indian Lab Suppliers supplies the Charles Law Apparatus (Combined) (Product ID: 10876) as part of its properties of matter range. It measures how the pressure of a fixed mass of air changes with temperature when its volume is held constant.

Quick Answer

Jolly’s air bulb is connected by flexible rubber tubing to a glass mercury reservoir that slides on a vertical rod. The polished wooden stand sits on a heavy cast-metal base with levelling screws, and a metre scale graduated 0–100 cm × 1 mm, reading in both directions, gives the mercury levels directly. With the bulb in water at different temperatures, the reservoir is moved to bring the mercury back to a fixed mark, and the pressure is atmospheric pressure plus the level difference. Strictly, this constant-volume relation is the pressure law (Gay-Lussac’s law), though it is often taught alongside Charles’s law. Mercury is not included; handle it over a spill tray with good ventilation.

Key Specifications

Parameter	Detail
Gas bulb	Jolly’s air bulb
Reservoir	Glass, on sliding bracket on vertical rod
Scale	0–100 cm x 1 mm, reads both directions
Base	Heavy cast metal, levelling screws
Not included	Mercury

Where This Is Used

Used for gas-law practicals and to estimate absolute zero from a pressure–temperature graph. A simpler volume–temperature set is the Charles Law Apparatus, Basic (Product ID: 10877). Browse the full Properties of Matter range or related Heat products.