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WHA1541150

Whatman® quantitative filter paper, hardened ashless, Grade 541

circles, diam. 150 mm, pack of 100

Synonym(s):

Whatman filter, Z241695, filter papers, paper filter

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About This Item

UNSPSC Code:
41104900
NACRES:
NB.24

material

circles
cotton filters (high-quality cotton linters)

packaging

pack of 100

manufacturer/tradename

Whatman 1541-150
Whatman Article No. 28418239 (US reference)

parameter

34 sec/100 mL speed (Herzberg)
7 psi wet burst

diam.

150 mm

thickness

155 μm

ash

≤0.006%

pore size

22 μm (Particle retention)

basis weight

82 g/m2

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General description

Cytiva′s Whatman Grade 541 acid hardened cellulose filter paper features high wet-strength, high chemical resistance, and a large nominal particle retention for fast analytical filtration.

Along with fast Grade 541 filter paper, the hardened, ashless range from Cytiva′s business includes general-purpose Grade 540 and Grade 542 for fine particle retention. All three paper grades are appropriate for use in gravimetric analysis with strong acids and alkali samples.

Application

Hardened ashless filter paper is recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Applications of Grade 541 papers include:
  • Use as an animal foodstuff filter for determining fiber content
  • Determination of gelatin content in milk and cream
  • Quantification of chloride in cement, as well as chloride and phosphorous in coal and coke

Features and Benefits

  • High wet-strength
  • High chemical resistance to strong acid and alkali suspensions
  • Retention of gelatinous precipitate
  • 22 µm nominal particle retention rating
  • Fast flow rate (Herzberg filtration speed 34 s)
  • Maximum of 0.006% ash concentration

Other Notes

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

Legal Information

Whatman is a registered trademark of Cytiva

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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