Geotextile Testing Instruments

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

To make the process of sieving easier and quicker, electrically operated mechanical table top type sieve shakers are offered for dry sieving. These Sieve Shakers are popularly used not only in soil laboratories but also dry sieving the geotextile testing

The Beads of the following size is available in One Kg pack

• Rounded Beads, made of glass, size 0.85 mm (passing 1 mm and retained at 0.85 mm)
• Rounded Beads, made of glass, size 0.425 mm (passing 0.85 mm and retained at 0.425 mm)
• Rounded Beads, made of glass, size 0.25 mm (passing 0.425 mm and retained at 0.25 mm)
• Rounded Beads, made of glass, size 0.18 mm (passing 0.25 mm and retained at 0.18 mm)
• Rounded Beads, made of glass, size 0.15 mm (passing 0.18 mm and retained at 0.15 mm)
• Rounded Beads, made of glass, size 0.075 mm (passing 0.15 mm and retained at 0.075 mm)