Whatman™
1004-125
1004-027
1004-648
1004-648
1004-047
1004-110
1004-090
1004-070
1004-150
1004-185
1004-050
1004-917
1004-047
1004-320
1004-090
1004-055
1004-070
1004-930
1004-027
1004-400
1004-270
1004-041
1004-125
1004-055
1004-150
1004-110
1004-917
1004-042
1004-270
1004-050
1004-930
1004-041
1004-400
1004-320
1004-042
1004-185
1004-240
1004-240
1004-150
470019-894BX
78.55
CAD
70240-024
10035-824
70240-026
28460-142
28460-164
28460-120
CA28460-030
28460-063
28460-041
CA11012-830
28460-085
CA28460-171
CA28460-110
10035-230
11008-514
CA11012-606
10035-232
CA11012-608
CA11012-828
CA28460-019
10147-900
28460-171
CA70240-024
CA70240-026
28460-110
CA28460-085
CA28460-041
470019-894
CA28460-063
28460-030
CA11012-602
CA28460-120
CA28460-142
CA28460-164
28460-019
CA11008-514
CA10147-900
10035-226
10035-228
Whatman™ Grade 4 Qualitative Filter Papers, Whatman products (Cytiva)
Filters
Filter Papers
Qualitative Filter Paper
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.
- 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
These cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).
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.