Sulphur in lents
CONCRETE LABORATORY PRODUCTS
REFERENCE MATERIAL SAND FOR QUALIBRATION DIN / ASTM SIEVES
PROPERTY OF THE SAND STANDARD SNL
SNL prepare and certify, from natural quartz sand more than 98%, standard sand using certified ASTM or DIN sieves between 0.063 mm and 4 mm.
Reference standard sand SNL is developed for laboratories seeking to establish a relation between their sieves and values checked against COFRAC sieve. Sieves proposed range of 0.065 mm to 4 mm (ASTM and DIN values).
Each bottle is made as standard of 200 grams of certified product, this weight may be passed up to 200 gr if needed. It is closed by a cap sealed and crimped type in order not to humidity Packaged in plastic film shockproof, it will be easy to transport by parcel post or in addition with other SNL products.