202 Quantitative filter paper 101 Qualitative filter paper 100 alpha cotton cellulose Quantitative Filter Paper(Ashless filter paper)Features: 1. Mainly used for qualitative chemical analysis and relevant filter separation,as well as manufacturing test paper of relevant purity2. Basis weight: 80gsm3. Size: a) Round (diameter): 70mm, 90mm, 110mm, 125mm, 150mm, 180mmb) Square (L x W): 300 x 300mm, ...