Whatman 1441-055 Grade 41 Fast Ashless Filter Paper, 55 mm circle

Whatman 1441-055 Grade 41 Fast Ashless Filter Paper, 55 mm circle (100 pcs)


Brand : Whatman
Catalog No. : 1441-055


Whatman Quantitative Filter Papers, Ashless, Grade 41 Cytiva #39;s Whatman Grade 41 environmental pollution papers are among the fastest filter papers in the Whatman ashless range. This gravimetric filter is well suited for quantitative analysis of soil and air.


Specification
Parameter Grade 41 Fast Ashless Filter Paper, 55 mm circle (100 pcs)
Grade Grade 41
Format Circles
Type Ashless
Typical Particle Retention in Liquid1 20µm
Nominal thickness 215 µm
Typical water flow rate2 254 ml/min
Nominal basis weight 85 g/m²
Nominal air flow rate 4 s/100 mL/in²
Nominal Ash Content3 0.007%
Material High-quality cotton linters
Alpha Cellulose Content Min. ≥98%


Typical Trace Element Levels
Aluminium 2.5 µg/g
Antimony lt;0.5 µg/g
Arsenic lt;0.5 µg/g
Barium lt;0.5 µg/g
Boron lt;1 µg/g
Calcium 8.3 µg/g
Chromium 1.5 µg/g
Copper 2 µg/g
Iron 12 µg/g
Lead lt;0.5 µg/g
Magnesium 4 µg/g
Manganese lt;0.5 µg/g
Mercury lt;0.5 µg/g
Potassium 2.3 µg/g
Silicon 6.2 µg/g
Sodium 16.8 µg/g
Zinc 64.5 µg/g


Application
Designed for gravimetric analysis and the preparation of samples for instrumental analysis.
For analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides).
Also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.
Dimensions Ø 55 mm
1Particle retention rating at 98% efficiency.
2For 9 cm diameter
3Ash is determined by ignition of the cellulose filter at 900°C in air.




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