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WHA1442110

Whatman® quantitative filter paper, ashless, Grade 42

circles, diam. 110 mm, pack of 100

Synonyme(s) :

Whatman paper, Z241105, filter papers, paper filter

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About This Item

Code UNSPSC :
41104900
Nomenclature NACRES :
NB.24

Matériaux

circles
cotton filters (high-quality cotton linters)

Conditionnement

pack of 100

Fabricant/nom de marque

Whatman 1442-110
Whatman Article No. 28418043 (US reference)

Paramètres

0.40 psi wet burst
1870 sec/100 mL speed (Herzberg)

Diamètre

110 mm

Épaisseur

200 μm

Cendres

≤0.007%

Dimension de pores

2.5 μm (Particle retention)

Poids de base

100 g/m2

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Description générale

Our high-purity Whatman ashless Grade 42 quantitative filter papers are suitable for a wide range of critical analytical filtration procedures for quantitative analysis. Grade 42 filter papers have the finest retention of all Whatman ashless filter paper grades. Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.

Whatman Grade 42 quantitative papers from Cytiva business are designed for retention of extremely small particles. A common example is use of Grade 42 as a calcium carbonate filter for analysis in the cement industry.

Other typical precipitates for gravimetric analysis include barium sulfate and metastannic acid for use in glazes, coatings, and pigments. The high purity of Cytiva′s Grade 42 filters also makes them suitable for processes that require ashing.

Application

Whatman ashless quantitative filter papers are high-purity filters that support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples. Cytiva′s high-purity Whatman ashless filter papers are suited for
  • Environmental analysis: soil filtration analysis, when separating solid matter from aqueous extracts
  • Retention of small particles
  • Collection of trace elements and radionuclides from the atmosphere

Caractéristiques et avantages

  • 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
  • Particularly suitable for gravimetric analysis

Autres remarques

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Informations légales

Whatman is a registered trademark of Cytiva

Certificats d'analyse (COA)

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