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UNIVERSAL PERMEABILITY AZA0877
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SAND POURING CYLINDER AZA0879

SOIL PERMEABILITY 75 MM AZA0878

The AZA0878 Soil Permeability Apparatus from Azalab is a precision laboratory instrument designed for accurate determination of soil permeability (hydraulic conductivity) using both Constant Head and Falling Head methods. Equipped with a 75 mm diameter permeameter cell, this apparatus is ideal for comprehensive testing of coarse-grained and fine-grained soils in geotechnical laboratories.

Determination of soil permeability is essential for the design and analysis of foundations, earth dams, embankments, drainage systems, groundwater flow studies, and liquefaction assessments. The AZA0878 delivers reliable, repeatable, and standard-compliant results for professional soil testing.

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Description

Description

Test Methods Supported

Constant Head Permeability Test

  • Suitable for coarse-grained soils (sands, gravels)

  • Maintains a constant hydraulic head using a 75 mm bore tube with overflow

  • Measures discharge volume over time

  • Permeability calculated using Darcy’s Law

Falling Head Permeability Test

  • Ideal for fine-grained soils (silts, clays)

  • Measures rate of fall of water level in glass standpipes of varying diameters

  • Highly sensitive for low-permeability soils

Key Features

  • Universal apparatus for Constant Head & Falling Head tests

  • 75 mm permeameter cell for representative soil sampling

  • Multiple glass standpipes for wide permeability range

  • Overflow arrangement for constant head testing

  • Robust clamping system with porous stones

  • Stable laboratory mounting

  • Durable, corrosion-resistant construction

  • Designed for accurate saturation and controlled flow

  • Proven Azalab quality and reliability

Applications

  • Laboratory soil permeability testing

  • Foundation and earthwork design

  • Drainage and seepage analysis

  • Groundwater flow evaluation

  • Academic and research laboratories

  • Geotechnical quality control

Technical Specifications

Model Number: AZA0878
Apparatus Type: Universal Soil Permeability Apparatus
Test Methods: Constant Head & Falling Head

Permeameter Cell Diameter:

  • 75 mm

Mould Material:

  • Gun metal / transparent acrylic (as applicable)

Standpipe Panel:

  • One 75 mm bore tube with overflow for constant head test

  • Additional glass standpipes of smaller diameters (e.g., 6 mm, 10 mm, 20 mm, etc.) for falling head test

Measuring Scale:

  • Wooden meter scale

Drainage System:

  • Top and bottom porous stones / perforated plates

Clamping Mechanism:

  • Heavy-duty clamps or tightening nuts

Tubing:

  • Flexible rubber tubing

Base Assembly:

  • Rigid and stable laboratory base

Water Supply:

  • External constant head water source required (supplied separately)

Compliance:

  • IS 2720 (Part XVII)

  • ASTM D2434 (referential – constant head method)

  • BS EN ISO 17892-11

Usage:

  • Laboratory determination of soil permeability (hydraulic conductivity)

Advantages

  • Single apparatus for wide soil permeability range

  • Accurate and repeatable results

  • Standard-compliant design

  • Long service life with minimal maintenance

  • Essential equipment for professional geotechnical laboratories

Additional information

Additional information

Model Number

AZA 0878
Apparatus Type

Universal Soil Permeability Apparatus (Constant Head & Falling Head)
Permeameter Cell (Mould) Diameter

75 mm
Mould Material

Typically gun metal or durable transparent acrylic/plastic.
Tubing

Flexible rubber tubing for water connections.
Base

Stable base for mounting the permeameter and standpipe pane

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