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WHA1542240

Whatman® quantitative filter paper, hardened ashless, Grade 542

circles, diam. 240 mm, pack of 100

Synonym(s):

Whatman filter, Z241512, filter paper, 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 1542-240
Whatman Article No. 28418254 (US reference)

parameter

2510 sec/100 mL speed (Herzberg)
6 psi wet burst

diam.

240 mm

thickness

150 μm

ash

≤0.006%

pore size

2.7 μm (Particle retention)

basis weight

93 g/m2

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General description

These are the supreme hardened ashless quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.

Grade 542: 2.7 μm (slow filter paper)
High retention of fine particles under demanding conditions. Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations.

Features and Benefits

  • High wet-strength
  • Acid-hardened for resistance to strong acid and alkali solutions
  • Nominal particle retention rating of 2.7 µm
  • Herzberg filtration speed of 2510 s
  • Extremely low ash content (0.006% ash maximum)

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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