Product Description

The test involves sieving rounded particle sizes for which 5% or less by weight pass through the geotextile. The Apparent Opening Size (AOS) is defined as ‘Retained On size of that fraction expressed as a standard sieve number (size). The test is widely used for relative comparison amongst the geotextiles. Thus AOS is a means of correlating geotextile pore structure to an equivalent screen mesh size. The apparatus consist of a 20 cm dia brass frame with clamp, a receiver and a lid Dry Sieve Test Apparatus. Meets: - ASTM D4751-87, BS-6906-2, IS-14294