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FILTER PAPERS
LABORATORY FILTER PAPERS
Grade 292 - medium to slowly filtering, medium tight
fast filtration of fine precipitates such as calcium oxalate, magnesium ammo-
nium phosphate,
coarser forms of barium sulphate
Basis weight
87 g/m
2
Filtration velocity:
10 ml / 45 seconds
Typical pore size:
5 - 8 µm
Similar to:
Whatman 1, S&S 593, M-N 616 md
Diam.
Code
Grade/Description
Pack of
55 mm FTR 3.205.055 292 / Filter discs.
100
70 mm FTR 3.205.070 292 / Filter discs.
100
90 mm FTR 3.205.090 292 / Filter discs.
100
110 mm FTR 3.205.110 292 / Filter discs.
100
125 mm FTR 3.205.125 292 / Filter discs.
100
150 mm FTR 3.205.150 292 / Filter discs.
100
185 mm FTR 3.205.185 292 / Filter discs.
100
240 mm FTR 3.205.240 292 / Filter discs.
100
Grade 292a - slowly filtering, narrow pores
filtration of fine precipitates such as lead dioxide, calcium fluoride, nickel
sulphide, zinc sulphide
Basis weight
97 g/m
2
Filtration velocity:
10 ml / 60 seconds
Typical pore size:
5 - 8 µm
Similar to:
Whatman 2, S&S 2095
Diam.
Code
Grade/Description
Pack of
55 mm FTR 3.215.055 292a / Filter discs.
100
70 mm FTR 3.215.070 292a / Filter discs.
100
90 mm FTR 3.215.090 292a / Filter discs.
100
110 mm FTR 3.215.110 292a / Filter discs.
100
125 mm FTR 3.215.125 292a / Filter discs.
100
150 mm FTR 3.215.150 292a / Filter discs.
100
185 mm FTR 3.215.185 292a / Filter discs.
100
240 mm FTR 3.215.240 292a / Filter discs.
100
GENERAL PURPOSE, QUALITATIVE-
TECHNICAL FILTERS
Grade 3 hw - medium rate of filtration, increased wet strength, plain
This paper grade is generally used for analytical and technical purposes.,
as Clarification, Analytical Sample Preparation, Particle Analysis
Basis weight
65 g/m
2
Filtration velocity:
10 ml / 20 seconds
Typical pore size:
8 - 12 µm
Similar to:
Whatman Student Grade, S&S 595, 3002
M-N 615
Diam.
Code
Grade/Description
Pack of
55 mm FTR 3.303.055 3 hw / Filter discs.
100
70 mm FTR 3.303.070 3 hw / Filter discs.
100
90 mm FTR 3.303.090 3 hw / Filter discs.
100
110 mm FTR 3.303.110 3 hw / Filter discs.
100
125 mm FTR 3.303.125 3 hw / Filter discs.
100
150 mm FTR 3.303.150 3 hw / Filter discs.
100
185 mm FTR 3.303.185 3 hw / Filter discs.
100
240 mm FTR 3.303.240 3 hw / Filter discs.
100