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WHA10313953

Whatman® application specific filter, prepleated qualitative filter paper, Grade 2555 1/2

circles, diam. 320 mm, pack of 100

Synonym(s):
Whatman filter, Whatman paper, Z695955, paper filter
NACRES:
NB.24

material

cellulose membrane
circles

sterility

non-sterile

packaging

pack of 100

parameter

55 sec/100 mL speed (Herzberg)

diam.

320 mm

thickness

170 μm

pore size

7-12 μm (Particle retention)

basis weight

75 g/m2

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General description

Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles:

  • Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses
  • Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due to the loading of particulate is postponed
  • Increased total loading capacity as more filter area is available
  • Maintained flow rate due to the reduction in filter paper contact with funnel side and, the self-supporting shape of the filter itself
  • The prepleating does not significantly affect any of the technical data and the same figures may be used for the flat circles

Grade 2555 ½ : 7-12 mm (medium fast filter paper)
A medium fast filter paper. Application specific, used for the filtration of the mash for the determination of the extract in malt and wort and for removing carbon dioxide from beer.
Grade 2555 1/2 A medium fast filter paper. Used for the filtration of the mash for the determination of the extract in malt and wort and for removing carbon dioxide from beer.
  • Particle retention in liquid (μm): 7 - 10
  • Filtration speed (approx.) herzberg (s): 55
  • Typical thickness (μm): 170
  • Basis weight (g/m2): 75

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

Certificate of Analysis

Certificate of Origin

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