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Quantitative Filters - 389 - white spot

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389 - white spot - medium fast filtering, medium wide 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.

Typical grade for quantitative tasks, coarser precipitates, such as

lead-iron
silver sulphide
alcali carbonates
food stuff and soil analysis

Basis Weight:	84 g/m2
Filtration velocity:	10 ml / 23 seconds
Typical Pore Size:	8 - 12 µm
Similar to:	Whatmann 41, S&S 589/2, M-N 640m

Diam.	Code	Grade/Description	Pack of
55 mm	FTR 3.102.055	389 / Filter discs. White dot	100
70 mm	FTR 3.102.070	389 / Filter discs. White dot	100
90 mm	FTR 3.102.090	389 / Filter discs. White dot	100
110 mm	FTR 3.102.110	389 / Filter discs. White dot	100
125 mm	FTR 3.102.125	389 / Filter discs. White dot	100
150 mm	FTR 3.102.150	389 / Filter discs. White dot	100
185 mm	FTR 3.102.185	389 / Filter discs. White dot	100
240 mm	FTR 3.103.240	389 / Filter discs. White dot	100

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