Glass Bead Set and Separating Sieves for Apparent Opening Size
The graded glass beads and separating sieves that the dry-sieving apparent opening size method consumes — the part of an AOS rig that is bought again, not once.
Typical applications
- Apparent opening size determination on geotextiles
- Re-grading of recovered bead fractions between test runs
Conforms to
- ASTM D4751—Determining apparent opening size of a geotextile
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Add as many products as you need and send one enquiry covering all of them, or send this item on its own. Bulk and drum quantities are quoted on request.
Worth knowing before you order
This is a consumable set, listed separately because it behaves like one. The supplier panel names it without stating which bead fractions or which sieve apertures are included, and those are exactly the details that decide whether the set matches the sizes your specification calls for. Send us the O95 range you test across and we will confirm the fractions and apertures in writing.Specification
| Purpose | Supplies and re-separates the graded spherical glass beads that ASTM D4751 Method A1 sieves through the specimen |
|---|---|
| Why it is a separate line | Beads are lost and fractured in use, and a fraction that has drifted out of grading quietly biases every O95 result taken with it |
| Re-separation | Beads are recovered and re-graded on the separating sieves between runs |
Support available
- Spares & consumables
Calibration is arranged through NABL-accredited laboratories under the relevant scope. We state the scope and the certificate number on the quotation — see what accreditation actually covers.
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Specification for Apparent Opening Size Tester for Geotextiles
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