Whatman Grade No. 1 Filter Paper Whatman

Whatman Grade No. 1 Filter Paper Whatman. 1 Filter Paper. Strainer paper is used primarily for the pre-concentration of granular and colloidal materials. Whatman Grade No. 1 Filter Paper Strainers classify the collected matter according to a pre-set porosity or degree of retention allowing no liquid or solid material to pass without retention. The paper is ideal where fast coarse filtration such as that required for the pre-concentration of colloidal particles or coarse suspended matter is highl