Organic Impurities Test Manufacturer,Supplier and Exporter in India
Product Code : TVT-STE-10601
The Organic Impurities Test set covers procedures for an approximate assessment of the presence of injurious organic impurities in fine aggregate, a quick screening check before the aggregate is approved for use in concrete.
How It Works
A sample of fine aggregate is placed in a graduated glass bottle with a sodium hydroxide solution and shaken, then left to stand; any organic impurities present colour the supernatant liquid, and the resulting colour is compared visually against a set of standard reference colours or glass colour plates. A colour matching or exceeding the specified reference indicates a potentially injurious level of organic material that may need further investigation before the aggregate is used in concrete.
Technical Specifications
| Parameter | Specification |
|---|---|
| Method | Colorimetric comparison against standard reference colours |
| Dimension | Approx. 170 x 250 mm |
| Approx. Weight | 400 g |
Applications
This test is used to screen fine aggregate for organic impurities that can interfere with cement hydration and reduce concrete strength, governed by ASTM C40/C40M: Standard Test Method for Organic Impurities in Fine Aggregates for Concrete and IS 2386 (Part 2): Methods of Test for Aggregates for Concrete – Estimation of Deleterious Materials and Organic Impurities. A positive (darker) colour result typically triggers a follow-up mortar-strength comparison test before an aggregate source is rejected outright.
Related Products & Category
This machine is part of the Soil Testing Equipment range at Tvet Equipments. Related machines include: Methylene Blue Value Set, Soil Colour Chart.
Frequently Asked Questions
What does a dark colour result indicate?
A colour matching or darker than the specified reference indicates a potentially injurious level of organic impurities in the fine aggregate, warranting further investigation.
Is this test a final pass/fail determination?
It is typically a screening step; aggregates showing a positive colour result are often followed up with a comparative mortar-strength test before a final accept/reject decision.
Which standards govern this test?
ASTM C40/C40M internationally and IS 2386 (Part 2) in India govern the organic impurities test for fine aggregate.
Request a Quote
Looking to buy or get pricing for this machine? Request a quote from Tvet Equipments and our team will get back to you with indicative pricing and lead times.
