Weighing Bottle

Quick Answer: LabEquip’s Weighing Bottle is a chemically inert borosilicate glass vessel with a close-fitting lid, purpose-built for accurately weighing hygroscopic or volatile substances on an analytical balance without the sample absorbing atmospheric moisture or evaporating during the process.

Product Description

Weighing Bottles are small laboratory vessels engineered specifically for the measurement of hygroscopic or volatile substances. Constructed from chemically inert borosilicate glass, they help prevent atmospheric moisture absorption or sample evaporation during the analytical weighing process, supporting pharmaceutical quality control and quantitative analysis where sample mass integrity is critical from the moment a substance is weighed to the moment it is used.

What Makes This Instrument Distinct

Unlike LabEquip’s measuring cylinders, which are designed for measuring liquid volume, the Weighing Bottle is built for accurately weighing solid or liquid samples by mass. Its close-fitting lid is the key feature: it lets the sample be weighed, transferred, and re-weighed with minimal exposure to ambient air, which matters for substances that would otherwise gain or lose mass through moisture absorption or evaporation between weighings — a common requirement in loss-on-drying and moisture-content determinations.

Specifications

Care & Maintenance

• Clean and dry the bottle thoroughly before use, since any residual moisture will affect weighing accuracy.
• Handle with clean, dry tongs or gloves rather than bare hands, as fingerprints add mass and moisture to the bottle.
• Keep the lid on whenever the bottle is not being actively weighed into or out of, to minimise exposure to ambient moisture.
• Store in a clean, dry environment, ideally in a desiccator between uses for moisture-sensitive applications.

Why Choose LabEquip

LabEquip supplies weighing and measuring instruments that work together across a lab’s analytical workflow, from precise reference masses to purpose-built vessels for handling sensitive samples. Explore related instruments:

• Brass Analytical Weight Set (1mg-100g)
• Measuring Instruments Category

Frequently Asked Questions

What is a Weighing Bottle used for?
It is used to accurately weigh hygroscopic or volatile substances on an analytical balance, minimising moisture absorption or evaporation during the process.

How is this different from a measuring cylinder?
A measuring cylinder measures liquid volume, while a Weighing Bottle is designed to weigh a sample by mass with minimal exposure to ambient air.

Why does the lid matter?
The close-fitting lid limits how much the sample’s mass can change from moisture absorption or evaporation between weighings, which is important for hygroscopic or volatile substances.

What material is the Weighing Bottle made from?
Chemically inert borosilicate glass, chosen for its resistance to most laboratory reagents and stable behaviour during weighing.

What sizes are available?
Exact dimensions and capacity vary; please confirm your requirement with our sales team.

How should I care for a Weighing Bottle?
Keep it clean and dry, handle it with tongs or gloves rather than bare hands, and store it with the lid on, ideally in a desiccator between uses.

Last Updated: September 2026