Ⅰ. Purchase purpose:
If you are purchasing for the laboratory, you must require exquisite appearance and practicality, accurate mesh, and it have been tested by professional testing equipment, and meet the national standard GBT6003-1997 or the international standard ISO3310-1:1990 standard sieve.
Ⅱ. the points to be provided when purchasing:
①What criteria are required to be met. (Example: I need a standard sieve that meets the national standard GBT6003-1997)
②Provide mesh size and wire diameter.
③What materials are tested.
④Square hole sieve or round sieve.
