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WHA1091185

Whatman® qualitative filter paper, Grade 91, creped

circles, diam. 185 mm, pack of 1000

Synonym(s):

Whatman filter, Z699608, filter paper, paper filter

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About This Item

UNSPSC Code:
41104900
NACRES:
NB.24

material

cellulose filters
circles

packaging

pack of 1000

manufacturer/tradename

Whatman 1091-185
Whatman Article No. 28417534 (US reference)

parameter

2 psi wet burst
70 sec/100 mL speed (Herzberg)

diam.

185 mm

thickness

205 μm

pore size

10 μm (Particle retention)

basis weight

71 g/m2

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General description

These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce any significant impurities into the filtrate. The resins do, however, contain nitrogen so these grades should not be used in Kjeldahl estimations, etc. Some wet strengthened grades are available in folded (prepleated) forms.

Grade 91: 10 μm (credped filter paper)
A general purpose creped filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.

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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