- Home
- Cytiva Whatman Grade 4 No.4 Qualitative Filter Paper Series
Cytiva Whatman Grade 4 No.4 Qualitative Filter Paper Series
Whatman Grade 4 Qualitative Filter Papers are standard grade high flow rate cellulose filter papers for fast filtration.

Overview
Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.
These cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring)
Extremely high flow rate
- Excellent retention: captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide
- Fast filtration: useful for routine clean-up of biological fluids or organic extracts during analysis
Grade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
-
Autovial Syringeless Filter 12ml, 0.2µm PTFE, 50/pk Brand: WHATMAN SKU: WH/MI/BO/AV125EORG Login For Price
-
-
Grade 4 Reel, 1.5 x 4.5 inch (outer diameter) 1/pk Brand: WHATMAN SKU: WH/MA/AO/1004648 Login For Price
-
Mettler Toledo MR Series Precision Balance MR303 Brand: METTLER TOLEDO SKU: MT/30666215 Login For Price
Validate your login