Gay-Lussac Pycnometer Borosilicate Glass with Capillary Stopper

Gay-Lussac design pycnometer for density and specific gravity determination of liquids. Constructed in borosilicate glass with a ground-glass stopper incorporating an integrated capillary — ensures a constant, reproducible fill volume on every weighing.

How It Works

Fill the pycnometer with the liquid sample, seat the capillary stopper, and excess liquid is displaced automatically. Volume is defined by the instrument geometry — no judgement call on fill level. Weigh full and empty, calculate density from the difference. Straightforward, with no fill error.

Features

• Type: Gay-Lussac specific gravity bottle
• Material: Borosilicate glass
• Closure: Ground-glass stopper with integrated capillary
• Function: Density and specific gravity of liquids
• Form: Cylindrical body — flat base, sits stable on the balance pan without rolling

Applications

Quality control in pharmaceutical, food, and chemical manufacturing. Physics and chemistry laboratories for density measurement of solvents, oils, aqueous solutions, and other liquids. Also widely used in undergraduate teaching for densitometry practicals.

Technical Data

• Material: Borosilicate glass
• Stopper: Ground-glass with capillary
• Application: Density and specific gravity of liquids

Practical Advantages

The capillary stopper is what makes the Gay-Lussac design reliable — volume is fixed by the instrument, not the operator. Easy to clean; compatible with most organic and inorganic solvents thanks to the borosilicate construction. A straightforward instrument with a long track record in analytical laboratories.