Initial Surface Absorption Test Apparatus Manufacturer,Supplier and Exporter in India

Initial Surface Absorption Test Apparatus (Product Code: SLE/CE/32) is a stand-mounted test set used to assess the surface absorption characteristics of hardened concrete in civil engineering, durability research and materials testing laboratories. Engineering students and quality-control staff use it to measure the rate of water flow per unit area into a concrete surface held under a constant 200 mm head, read on a capillary tube mounted against a scale. Jain Scientific Equipments Pvt Ltd (ScienceLab) manufactures it as an OEM at its own factory in Ambala, India.

Specifications

What Is the ISAT Apparatus Used For?

The initial surface absorption test (ISAT) looks at the outer skin of concrete, the zone that protects reinforcement and first meets rain, groundwater and aggressive substances. Water from the reservoir is brought into contact with the test surface under the constant 200 mm head, and the movement of the water front along the capillary tube is timed against the scale. A lower flow rate points to a denser, less absorptive surface.

Laboratories use the apparatus to compare curing methods, mix designs and surface treatments on cast specimens or on existing elements. Test surfaces should be in a similar moisture condition before each run, and connections should be free of trapped air, so that results from different samples can be compared fairly. It suits the durability module of any engineering lab equipment set-up at a college or research centre.

OEM Manufacturer

ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM (original equipment manufacturer) of this Initial Surface Absorption Test Apparatus. It is produced at the company's own licensed factory at Saha, Ambala, Haryana, and dispatched factory-direct to universities, polytechnics, testing laboratories, dealers and importers in India and international markets. If you later need replacement tubes or other parts, ask us and the manufacturer itself will respond. See the company profile for more background.

Related Civil Engineering Lab Equipment

Durability testing usually combines several methods and needs properly cast and cured specimens:

• Concrete Permeability Test Apparatus — measures water penetration under pressure, a complementary durability test.
• Rapid Chloride Permeability Tester — assesses resistance of concrete to chloride-ion penetration.
• Concrete Cube Mould — for casting the specimens whose surfaces are tested.
• Accelerated Curing Tank — for curing cube specimens under controlled temperature before testing.

See more items in Civil Engineering Lab Equipment.

Frequently Asked Questions

What does the Initial Surface Absorption Test Apparatus measure?
The Initial Surface Absorption Test Apparatus measures the rate of flow of water per unit area into a concrete surface subjected to a constant 200 mm head of water. The result indicates how absorptive, and therefore how durable, the surface layer of the concrete is likely to be.

What parts make up the ISAT apparatus?
The Initial Surface Absorption Test Apparatus consists of a capillary tube mounted on a scale, a water reservoir and connecting tubes, all mounted on a stand. Its construction uses stainless steel and plastic, and it is designed to be easy to use in a teaching or testing laboratory.

What accuracy does the apparatus offer?
The Initial Surface Absorption Test Apparatus has a stated accuracy of ±1%. Consistent results also depend on good practice: keep the water head constant at 200 mm, remove air from the tubes, and condition the concrete surfaces in the same way before every test.

Why test surface absorption instead of only compressive strength?
Compressive strength says little about how easily water and dissolved salts enter concrete. The Initial Surface Absorption Test Apparatus focuses on the surface zone, where poor curing or a porous mix shows up first, so it adds durability information that strength tests alone cannot give.

Who manufactures the Initial Surface Absorption Test Apparatus?
The Initial Surface Absorption Test Apparatus (SLE/CE/32) is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory in Saha, Ambala, Haryana, India, and is supplied factory-direct to institutions, dealers and importers.

Can I get a calibration certificate with the ISAT apparatus?
Calibration or inspection documents for the Initial Surface Absorption Test Apparatus should be discussed with us before you order, so we can confirm what is possible. Please state your requirement on the contact page when you send your enquiry.

Request a Quote

Ask for a price on the Initial Surface Absorption Test Apparatus through the contact page, or place it in the enquiry cart with other durability test equipment. Your quotation is prepared by the manufacturer directly.

Last updated: 24 September 2026