Initial Surface Absorption Test (ISAT) Apparatus

Product Code : MSI 2008

The Initial Surface Absorption Test (ISAT) Apparatus is designed to determine the surface absorption characteristics of hardened concrete in accordance with BS 1881: Part 208. The apparatus measures the rate of water absorption per unit area when the concrete surface is subjected to a constant water head of 200 mm, providing valuable information about the quality, permeability, and durability of concrete.

The ISAT is widely used in quality control laboratories, research institutions, and construction projects to evaluate the resistance of concrete surfaces to water penetration, helping ensure long-term structural performance.

Applications

• Civil Engineering Laboratories

• Concrete Testing Laboratories

• Construction Quality Control

• Ready Mix Concrete (RMC) Plants

• Research & Development Centers

• Infrastructure & Highway Projects

• Bridge & Dam Construction

• Engineering Colleges & Universities

Features

• Manufactured in accordance with BS 1881: Part 208

• Accurate measurement of concrete surface absorption

• Constant 200 mm water head for reliable testing

• Precision capillary tube with graduated scale

• Stable water reservoir system

• Easy-to-read measurement scale

• Sturdy laboratory stand with durable construction

• Simple operation and low maintenance

• Corrosion-resistant finish for extended service life

Technical Specifications

Parameter Specification

Standard : BS 1881: Part 208

Test Type : Initial Surface Absorption Test (ISAT)

Water Head : 200 mm Constant Head

Measuring Device : Precision Capillary Tube

Scale : Graduated Measurement Scale

Water Supply : Reservoir with Connecting Tubes

Mounting : Rigid Laboratory Stand

Operation : Manual

Standard Supply Includes

• ISAT Test Unit

• Precision Capillary Tube

• Graduated Scale

• Water Reservoir

• Connecting Tubes

• Heavy-Duty Support Stand

• Operating Manual

Working Principle

The Initial Surface Absorption Test (ISAT) measures the rate at which water is absorbed into the surface of hardened concrete under a constant water head of 200 mm. Water flows through the capillary tube into the test area, and the rate of movement is recorded over time. Lower absorption rates generally indicate denser, less permeable, and more durable concrete.

Advantages

• Accurate evaluation of concrete surface permeability

• Assesses durability and quality of hardened concrete

• Simple and reliable testing procedure

• Precision measurement using capillary action

• Rugged construction for long service life

• Easy installation and operation

• Ideal for laboratory quality control and research

Why Choose Multitech Scientific Instruments?

• Precision-engineered concrete testing equipment

• Manufactured to International Standards

• Reliable and repeatable test results

• Durable construction with superior workmanship

• Competitive pricing

• Excellent after-sales support

• Trusted by laboratories, contractors, consultants, and educational institutions

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