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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