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Whatman Filter Papers
C7-67
Whatman filter papers are world-renowned as the standard for laboratory filtration and are associated with quality, reliability, and customer service. With an extensive line of filter papers
available, they are the optimum choice for many filtering techniques. Whatman maintains a guaranteed quality, reproducibility, and uniformity for all its filters and tests for basic weight,
thickness, air flow and mechanical strength.
FILM
FILM
Whatman Grade 1
The most widely used for routine applications. Medium retention & flow rate -Qualitative
Particle Retention Liquid 11µm
Code
Diameter, mm
Pack
FIL2024
30
400
FIL2026
42.5
100
FIL2028
55
100
FIL2029
70
100
FIL2031
90
100
FIL2032
110
100
FIL2033
125
100
FIL2034
150
100
FIL2035
185
100
FIL2036
240
100
Whatman Grade 2
Slightly more retentive than Grade 1 with a corresponding increase in filtration (ie slightly
slower filtration speed) Qualitative Particle Retention Liquid 8µm. Supplied in packs of
100.
Code
Diameter, mm
FIL2052
55
FIL2053
70
FIL2054
90
FIL2055
110
FIL2056
125
FIL2057
150
FIL2058
185
FIL2059
240
Whatman Grade 3
Twice the thickness of Grade 1. Used for high precipitate capacity without clogging eg
Buchner funnels - Qualitative Particle Retention Liquid 6µm. Supplied in packs of 100.
Code
Diameter, mm
FIL2072
55
FIL2073
70
FIL2074
90
FIL2075
110
FIL2076
125
FIL2077
150
FIL2078
185
Whatman Grade 4
Especially useful for gelatinous precipitates and retention of coarse particles with a fast
flow rate - Qualitative Particle Retention Liquid 20-25µm. Supplied in packs of 100.
Code
Diameter, mm
FIL2086
55
FIL2087
70
FIL2088
90
FIL2089
110
FIL2090
125
FIL2091
150
FIL2092
185
FIL2093
240
Whatman Grade 91
General purpose creped filter for less critical routine analysis. Wet strengthened-Qualitative
Particle Retention Liquid 10µm. Supplied in packs of 100.
Code
Diameter, mm
FIL2001
110
FIL2002
125
FIL2003
130
FIL2004
185
FIL2008
190
FIL2005
240
Whatman Grade 93
This filter paper is intermediate in speed and retention between Grades 1 and 4. Wet
strengthened-Qualitative Particle Retention Liquid 10µm. Supplied in packs of 1250.
Code
Diameter, mm
FIL3394
110
FIL3396
125
346