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Quantitative Filters - 390 - green spot

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390 - green spot - slowly filtering, narrow pores, ashless hardened

quantitative ashless filter papers are recommended for quantitative analysis.
As quantitative analysis requires a high purity, these filters are being washed out with acid

Filtration of fine precipitates such as

lead dioxide
calcium fluoride
nickel sulphide
zinc sulphide

Basis Weight:	84 g/m2
Filtration velocity:	10 ml / 100 seconds
Typical Pore Size:	3 - 5 µm
Similar to:	Whatmann 40, S&S 589/6, M-N 640d

Diam.	Code	Grade/Description	Pack of
55 mm	FTR 3.103.055	390 / Filter discs. Green dot	100
70 mm	FTR 3.103.070	390 / Filter discs. Green dot	100
90 mm	FTR 3.103.090	390 / Filter discs. Green dot	100
110 mm	FTR 3.103.110	390 / Filter discs. Green dot	100
125 mm	FTR 3.103.125	390 / Filter discs. Green dot	100
150 mm	FTR 3.103.150	390 / Filter discs. Green dot	100
185 mm	FTR 3.103.185	390 / Filter discs. Green dot	100
240 mm	FTR 3.103.240	390 / Filter discs. Green dot	100

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