About Particle Size Sedimentation (Hydrometer Method)
Specification:
Specification:
Particle size analysis of soils:
Hydrometer method
This equipment is used to determine the quantitative size distribution of very fine particle in soils such as clay and silt.
The complete set comprises:
- Sedimentation Cylinder,1000 ml capacity (6pieces) with rubber bungs.Soil Hydrometer,151H, range 0.995 to 1.038g/ml with div. 0.001.Glass Tank,dimensions: 600x300x380 mm
- Heatercomplete with thermostat, circulation unit. 230V Single Phase 50Hz 1000W
- Glass Thermometer,range -10 to 50 C., Sub-div. 0.5 C.
- Beaker,Borosilicate Glass, 250 ml capacity
- Sodium Hexametaphosphate, 1000 g
- High Speed Stirrer, 4000 R.P.M, complete with baffle cup, for dispersing soilparticles in water.
Compliant with Leading StandardsThis sedimentation apparatus adheres to IS: 2720 (Part IV) and ASTM D7928 standards, ensuring that particle size analysis achieves high levels of accuracy and reproducibility. Laboratories can trust the hydrometer's results for both academic and practical soil investigations.
Borosilicate Glass DurabilityEquipped with a borosilicate glass measuring cylinder and corrosion-resistant hydrometer, this setup withstands common laboratory chemicals. Its robust construction ensures equipment longevity while delivering consistently accurate results.
Manual Operation, No Power NeededThe device features an easy-to-use hand stirrer and does not require any electrical supply. This manual operation promotes safety in laboratory environments, reduces running costs, and ensures reliability regardless of local power conditions.
Precise and Broad Measurement RangeThe system provides particle size measurements from 2 micron up to 200 micron, with a 1% accuracy of the full scale and a resolution down to 0.1 micron. This enables professionals to characterize fine and coarse soil fractions effectively for foundational engineering applications.
FAQ's of Particle Size Sedimentation (Hydrometer Method):
Q: How is the particle size sedimentation test performed using the Bouyoucos hydrometer method?
A: The test involves mixing a soil sample with a dispersing agent in the borosilicate glass cylinder, then agitating with the hand stirrer. The Bouyoucos hydrometer is inserted to measure sedimentation over time, providing data used to estimate particle size distribution from 2 to 200 microns.
Q: What are the main benefits of using this sedimentation apparatus in laboratory soil analysis?
A: This apparatus offers reliable, standard-compliant particle size analysis, manual operation for safety and simplicity, and durable, chemical-resistant components. Its factory calibration and clear hydrometer scale ensure high accuracy with minimal maintenance.
Q: When should a dispersing agent be added during sample preparation?
A: A dispersing agent should be incorporated before stirring the soil sample in the cylinder. It separates soil particles, ensuring accurate measurement of individual particle sizes as required by IS: 2720 (Part IV) and ASTM D7928 standards.
Q: Where is this hydrometer-based sedimentation apparatus best used?
A: This equipment is ideal for laboratory settings, especially in soil mechanics, civil engineering, and environmental testing laboratories across India. Its compact, table-top design is suitable for any standard laboratory workspace.
Q: What is the process for calibrating or maintaining the hydrometer and cylinder?
A: The hydrometer comes factory calibrated, so routine re-calibration is generally not required. After each use, thoroughly clean all glassware to prevent residue build-up-for long-term accuracy, store in a safe, dry place protected from impacts.
Q: How much soil sample can be tested at once, and what is the minimum sample volume?
A: The device accommodates a single specimen per test, using soil samples between 50g and 100g, with a minimum sample volume requirement of 50 ml and a maximum of 500 ml in the graduated cylinder.
Q: What included accessories enhance the usage and convenience of this apparatus?
A: The sedimentation kit comes with a calibrated hydrometer, borosilicate glass cylinder, manual stirrer, and a comprehensive instruction manual, enabling immediate, straightforward setup and testing without the need for extra purchases.