Borosilicate glass density bottles (pyknometers) in 500 ml and 1000 ml for IS 2720 Part 3 soil specific gravity testing — in stock at Multi Trade Combines, Guwahati.
The density bottle — known in geotechnical engineering as a pyknometer — is a precision borosilicate glass vessel with a ground-glass stopper used to determine the specific gravity of soil particles per IS 2720 Part 3. Specific gravity (Gs) is not just an academic number: it is the denominator in the calculation of void ratio, the parameter that drives the settlement analysis of foundations and embankments, and an essential input to the soil classification system used in all Indian standard geotechnical reports. An error in Gs produces systematic errors in every compaction control and settlement calculation on the project.
The test procedure fills the pyknometer with soil and water at a known temperature, weighs the combined mass, and back-calculates the volume of solids from the displaced water. The ground-glass stopper has a capillary hole that expels bubbles during filling, ensuring the bottle volume is precisely defined and reproducible. Multi Trade Combines supplies 500 ml and 1000 ml density bottles to road project labs, soil investigation firms, engineering colleges and infrastructure quality-control teams across Assam and the Northeast. Breakage replacements are a common requirement — our Guwahati counter stocks these at competitive rates with fast availability.
In stock at Multi Trade Combines, AT Road, Guwahati — NE India delivery
Geotechnical testing generates steady demand for glassware, consumables and minor instruments: pyknometers, evaporating dishes, shrinkage dishes, core catchers, moisture-content tins and filter papers. Multi Trade Combines maintains civil lab consumable stock alongside our major equipment range — compression testing machines, CBR machines, Proctor compaction sets and aggregate testing equipment — so that project labs can source everything from the same Guwahati counter rather than waiting for Delhi or Kolkata shipments. For engineering colleges in Guwahati, Jorhat, Silchar and Shillong with active soil mechanics laboratories, we provide the full consumable and glassware range at institutional pricing. The density bottle is a fragile item that breaks in active lab use — keeping a spare pair in stock is standard practice for busy testing labs.
| Category | Civil Lab Equipment |
|---|---|
| Key specs | 500 ml / 1000 ml borosilicate glass |
| Availability | In stock — price on request |
| Standard | IS 2720 Part 3 (specific gravity) |
| Material | Borosilicate glass with ground glass stopper |
| Sizes | 500 ml (fine soils), 1000 ml (coarse soils) |
A pyknometer (density bottle) is used in the IS 2720 Part 3 test to determine the specific gravity of soil particles. The specific gravity value is essential for calculating void ratio, porosity and degree of saturation — all fundamental parameters in compaction control, soil classification and settlement analysis. The 500 ml bottle is used for fine-grained soils; the 1000 ml size is used for coarse-grained soils and gravels. Call +91 91812 13332 for stock details.
The 500 ml density bottle is most commonly used for fine-grained soils — silt and clay subgrades that predominate along Assam's Brahmaputra valley road alignments. The 1000 ml size is required for gravelly or sandy soils where the coarser particle size makes the smaller bottle impractical. Most well-equipped project labs carry both. WhatsApp +91 76359 98826 to confirm current stock and pricing.