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Relative Density Bottle (Specific Gravity Bottle)
Precision-Ground Capillary Stoppers: Features a hand-finished, tapered glass stopper with a centrally bored longitudinal capillary, allowing for the automatic expulsion of air bubbles and excess fluid to ensure an exact, reproducible volume.
Low-Expansion Borosilicate 3.3 Matrix: Fabricated from Type I glass with a minimal thermal expansion coefficient, preventing volumetric drift and ensuring structural integrity during the precise temperature equilibration required for Gay-Lussac density measurements.
₹355.00
Quick answer: STEMAids’ Relative Density Bottle (pyknometer) determines liquid density and specific gravity relative to water. This listing does not currently show a published price on stemaids.com — contact STEMAids directly for an indicative quotation.
Relative Density Bottles, or pyknometers, are calibrated instruments designed for the determination of liquid density and specific gravity. Engineered from chemically inert borosilicate glass, these vessels support pharmaceutical quality control and petrochemical analysis, providing metrological consistency for calculating the relative density of fluids against ultrapure water.
Technical Specifications
| Parameter | Detail |
|---|---|
| Also known as | Pyknometer |
| Material | Chemically inert borosilicate glass |
| Function | Determination of liquid density and specific gravity |
| Price | Not currently published — contact STEMAids for a quotation |
| Exact calibrated volume | Not independently verified for this listing — confirm with STEMAids before specifying in a tender |
Applications
- Determining liquid density in pharmaceutical quality control
- Specific gravity analysis in petrochemical laboratories
- Calculating relative density of fluids against ultrapure water
- Standardized laboratory measurement requiring metrological consistency
Care & Maintenance
- Rinse and dry thoroughly between different liquid samples
- Handle the glass instrument carefully to avoid chips that could affect calibrated volume
- Store in a padded case away from impact risk
Why Choose STEMAids
STEMAids supplies a wide range of Lab Glassware and Measuring Instruments including various hydrometers for density testing. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and ISO 9001:2015 certified, supplying schools, colleges and vocational institutes across India and for export.
Frequently Asked Questions
What is the Relative Density Bottle used for?
It is used to determine liquid density and specific gravity for pharmaceutical and petrochemical quality control.
Why doesn’t this listing show a price?
This listing does not currently have a published price on stemaids.com. Contact STEMAids directly for an indicative quotation.
What is a pyknometer?
A pyknometer is another name for a relative density (specific gravity) bottle — a calibrated vessel used to measure liquid density precisely.
How does this differ from a hydrometer?
A pyknometer provides highly precise density measurement via calibrated volume and weighing, while a hydrometer provides a faster, less precise floating-scale reading.
Is STEMAids a registered manufacturer of this bottle?
Yes. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and is ISO 9001:2015 certified. See the About page for full registration and certification details — manufacturer-stated, verify before citing in procurement documents.
Last updated: 29 August 2026.
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