Reference Sand according to UKAS22
Control Method for sieve
USAGE
Standard sands are used to control meshed cylindrical sieves
SNL has COFRAC certified sieves with the majority of normed meshes (EN, DIN, ASTM), with a range from 63µ to 8mm
TECHNICAL CHARACTERISTICS
The SNL prepares sand standards to control the performance of the sieves according to the UKAS 922 standard.
| SNL Calibrated sieves square mesh (mm) | Mean |
|---|---|
| 3.15 = 2D nearest size | 100% |
| D | 50% |
| 0.8 = 0.5D nearest size | 0% |
The SNL standard sand is developed for laboratories seeking to establish a relationship between their sieve and controlled values with respect to COFRAC sieves. The proposed range of sieve is from 0.065 mm to 4 mm (ASTM and DIN values).
Each bottle is composed in a standard way of 100 grams of certified product. This weight can be increased on request to 130 gr.
