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Borox Quantitative Ashless Filter Paper Fast Grade 41
Product Code: F11440
Quantitative filter papers have high wet strength and chemical resistance. They are acid-hardened, reducing ash to an extremely low level. Their hard surface makes them suitable for a wide variety of critical analytical filtration processes.
GRADE 40:
Particle retention: 8 µm
Ash: ≤0.007%
Ashless filter paper has a medium speed and retention capacity. Typical applications include gravimetric analysis of various components in cements, clays, iron, and steel products; as a primary filter for the separation of solids from aqueous extracts in general soil analyses; for the quantitative determination of sediments in milk; and as a pure analytical-grade clean-up filter for solutions prior to AA spectrophotometry. They are also used as a high-purity filter for the collection of trace elements and radioisotopes from the atmosphere.
|
Grade
|
Speed
|
Particle Retention in Liquid (µm) |
Flow rate (s) |
Thickness (mm)
|
Basic weight (g/m²)
|
Wet Burststrenght (mm H₂O)
|
Ash Content (<%)
|
|
40
|
Medium
|
8
|
80-90
|
0,21
|
95
|
280
|
0,01
|
|
41
|
Fast
|
20
|
20-80
|
0,22
|
85
|
280
|
0,01
|
|
42
|
Slow
|
2,5
|
200-240
|
0,2
|
100
|
280
|
0,01
|
|
43
|
Medium-Fast
|
16
|
40-60
|
0,22
|
95
|
280
|
0,01
|
|
44
|
Slow
|
3
|
150-180
|
0,18
|
77
|
280
|
0,01
|
