BS-42 NIST Sand, No. 30–No. 325 is used for testing a range of sieves from No. 30–No. 325 (600–45µm) and each set includes three 130g bottles of different sands. Material A is the coarsest for testing sieves from No. 30–No. 100. Material C is for No. 70–No. 200 sieves and Material D is for finer sieves, No. 100–No. 325.
- Determines effective sieve openings
- NIST Sand, No. 30–No. 325