Whatman™ Quantitative Filter Paper: Grade 42 Circles
Whatman™ Quantitative Filter Paper: Grade 42 Circles
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Fisher Catalogue

Whatman™ Quantitative Filter Paper: Grade 42 Circles

Filters and retains extremely small particles. Whatman™ Quantitative Filter Paper: Grade 42 Circles are suitable for processes that require ashing.
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Catalog NumberDiameter (Metric)
FKS11392955110 mm
FIS09-855D125 mm
FKS11302965125 mm
FKS11312965150 mm
Catalog number FKS11392955
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Diameter (Metric):
110 mm
Filters and retains extremely small particles. Whatman™ Quantitative Filter Paper: Grade 42 Circles are suitable for processes that require ashing.
Ashless grades are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman™ quantitative filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis.
  • Ashless: 0.007% ash maximum
  • Fine (2.5 μm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation
  • Herzberg filtration speed of 1870 s
  • Commonly used as a calcium carbonate filter

Specifications
Airflow Rate96 s/100 mL/in2
DescriptionGrade 42 Ashless Filter Paper for Instrumental Analysis, 110 mm circle (100 pcs)
Filter TypeAshless
FormatDisc
MaterialCotton Linters
Pore Size2.5 μm
Filtration Speed1870 sec.
Flow RateSlow
For Use With (Application)Designed for gravimetric analysis and the preparation of samples for instrumental analysis.For critical gravimetric analysis with the finest particle retention.
GradeGrade 42
PorosityFine
Quantity100 Pk.
Thickness (Metric)200 μm
TypeQuantitative Filter Paper
Diameter (English)4.33 in.
Diameter (Metric)110 mm
Unit SizePK