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WHA10310247

Whatman® application specific filter, prepleated qualitative filter paper, Grade 287 1/2

circles, diam. 185 mm, pack of 50

Synonym(s):
Whatman filter, Z695483, Whatman paper, paper filter
NACRES:
NB.24

material

cellulose membrane (Kieselguhr paper)
circles

sterility

non-sterile

feature

Grade 287 1/2

packaging

pack of 50

parameter

330 sec/100 mL speed (Herzberg)

diam.

185 mm

thickness

360 μm

basis weight

161 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 287 ½: kieslghur paper
Application specific cellulose filter paper. Kieselguhr paper with a medium to slow flow rate. Additional adsorption effect, e.g., for the separation of very fine semi-colloidal turbidity, for clarifying milk serum, starch solutions, soil suspensions or sugar-containing solutions prior to polarimetry or refractometry.

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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