Skip to Content
MilliporeSigma
All Photos(1)

Documents

WHA1091930

Whatman® qualitative filter paper, Grade 91, creped

sheets, W × L 580 mm × 580 mm, pack of 500

Synonym(s):

Whatman filter, Z699624, filter paper, paper filter

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
41104900
NACRES:
NB.24

material

cellulose
sheets

feature

Grade 91

packaging

pack of 500

manufacturer/tradename

Cytiva
Whatman 1091-930
Whatman Article No. 28417542 (US reference)

parameter

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

W × L

580 mm × 580 mm

thickness

205 μm

pore size

10 μm (Particle retention)

basis weight

71 g/m2

Looking for similar products? Visit Product Comparison Guide

Related Categories

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.

Features and Benefits

  • 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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service