Soil Hydrometer

Soil Hydrometer – Particle Size Analysis of Fine-Grained Soils

The Soil Hydrometer is a precision analytical tool designed to perform particle size distribution analysis of fine-grained soils, such as silt and clay, through sedimentation techniques. Widely used in geotechnical engineering, civil construction, and academic research, this instrument supports hydrometer analysis to determine the relative proportions of fine soil fractions that cannot be classified using sieve methods alone.

Manufactured to meet the stringent requirements of BS 1377, EN 1997-2, ASTM D422, and AASHTO T88, this hydrometer ensures accurate, repeatable results that are critical for soil classification, foundation analysis, and construction planning.

Key features of the Soil Hydrometer

Durable Construction: Powder-coated grey electro-galvanized outer case with acid-resistant brushed stainless steel interior.

Precision Temperature Control: Includes a Nickel-plated copper heater and a robust stainless-steel pump unit for stable water temperature.

Thermometer-Ready Design: Controller mounted on a stainless steel bridge plate, with a designated hole for thermometer insertion.

Clear Visibility: Fitted with a 300 x 250 mm toughened glass viewing window for accurate hydrometer reading.

Optional Gabled Lid: Stainless steel lid available for added safety and temperature retention.

Double Scale (Bouyoucos): Pre-calibrated at 68°F for high measurement accuracy in soil suspensions.

Applications of Soil Hydrometer

Hydrometer Analysis: Used for determining particle size distribution of silt and clay fractions.

Geotechnical Engineering: Essential for foundation design, slope stability, and earthwork planning.

Academic & Research Use: Ideal for soil mechanics labs and environmental science programs.

Construction Projects: Supports soil evaluation for roadways, dams, and large infrastructure developments.