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WHA1005090

Whatman® qualitative filter paper, Grade 5

circles, diam. 90 mm, pack of 100

Synonym(s):

Whatman filter, Whatman filters, Whatman paper, Z240680, filter paper, filter papers, paper filter

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About This Item

UNSPSC Code:
41104900
NACRES:
NB.24

material

cellulose filters
circles

packaging

pack of 100

manufacturer/tradename

Whatman 1005-090
Whatman Article No. 28414040 (US reference)

parameter

0.40 psi wet burst
1420 sec/100 mL speed (Herzberg)

diam.

90 mm

thickness

200 μm

ash

≤0.06%

pore size

2.5 μm (Particle retention)

basis weight

100 g/m2

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General description

These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Grade 5: 2.5 μm, (slow filter paper)
The maximum degree of fine particle filtration in the qualitative range. Capable of retaining the fine precipitates encountered in chemical analysis. Slow flow rate. Excellent clarifying filter for cloudy suspensions and for water and soil analysis.

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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Freddy Bunbury et al.
Plant physiology, 183(1), 167-178 (2020-02-23)
The corrinoid B12 is synthesized only by prokaryotes yet is widely required by eukaryotes as an enzyme cofactor. Microalgae have evolved B12 dependence on multiple occasions, and we previously demonstrated that experimental evolution of the non-B12-requiring alga Chlamydomonas reinhardtii in

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