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England & Wales 0115 982 1111
Whatman Filter Papers
C7-67
FIL
TRA
TION, FIL
TER P
APERS
FILTRATION, FILTER PAPERS
Whatman Grade 43
Intermediate in retention between Grades 40 and 41, and twice as fast as Grade 40 -
Quantitative Particle Retention Liquid 16µm. Supplied in packs of 100.
Code
Diameter, mm
FIL2235
110
FIL2236
125
FIL2237
150
FIL2238
185
Whatman Grade 44
Thin version of Grade 42 retaining very fine particles but with lower ash weight per sample
and almost twice the flow rate of Grade 42 - Quantitative Particle Retention Liquid 3µm.
Supplied in packs of 100.
Code
Diameter, mm
FIL2239
70
FIL2240
90
FIL2241
110
FIL2242
125
FIL2243
150
FIL2244
185
Whatman Grade 50
Hardened low ash filter. The thinest of all Whatman papers for retention of the finest
crystalline precipitates. Slow flow rate - Quantitative Particle Retention Liquid 2.7µm.
Supplied in packs of 100.
Code
Diameter,
FIL2246
55
FIL2247
70
FIL2248
90
FIL2249
110
FIL2250
125
FIL2251
150
FIL2252
185
FIL2253
240
Whatman Grade 54
Hardened low ash filter. Very fast filtration for use with coarse and gelatinous precipitates.
High wet strength - Quantitative Particle Retention Liquid 20-25µm. Supplied in packs
of 100.
Code
Diameter, mm
FIL2267
55
FIL2268
70
FIL2269
90
FIL2270
110
FIL2271
125
FIL2272
150
FIL2273
185
FIL2274
240
FIL2276
320
Whatman Grade 540
The general purpose hardened ashless filter paper with medium retention and flow rate.
Extremely pure and strong with a hard surface. - Quantitative Particle Retention Liquid
8µm. Supplied in packs of 100.
Code
Diameter, mm
FIL2301
55
FIL2303
90
FIL2304
110
FIL2305
125
FIL2306
150
FIL2307
185
Whatman Grade 541
Filter with high wet strength. Very fast to retain coarse and gelatinous precipitates -
Quantitative Particle Retention Liquid 20-25µm. Supplied in packs of 100.
Code
Diameter, mm
FIL2311
55
FIL2312
70
FIL2313
90
FIL2314
110
FIL2315
125
FIL2316
150
FIL2317
185
FIL2318
240
348