Grain Composition Sand Ruler is a handy field aid that allows you to determine the granular composition of sand samples you are collecting. An important quality of material in a soil profile is the grain size distribution or texture. Made from a robust transparent disc, which contains 10 fractions of reference material according to the sand median. A hollow in the centre lets users place their sediment sample so you can easily cross-reference it with the fractions to determine various factors of the material. Such as grain size, distribution, and more. Specifications: Build: Clear plastic Fractions: 10 63, 90, 125, 180, 250, 355, 500, 710, 1000, 1400, 200 µm (micrometers) Splash resistant: Yes Compliance: NEN 2560, ISO 565, DIN 4188, ASTM E-11, BS 410
