Whatman™ Qualitative Filter Papers: Grade 4 Sheets
Filters and retains course particles for monitoring air pollution. Whatman™ Qualitative Filter Papers: Grade 4 Sheets are used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
Description and Specification
|Dimensions (L x W)||570 x 460mm|
|Particle Retention||Coarse particles and gelatinous precipitates|
|Pore Size (Metric)||20 to 25μm|