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WHA10300145

Whatman® prepleated quantitative filter paper, ashless, Grade 589/2 1/2 white ribbon

circles, diam. 150 mm, pack of 100

Synonym(s):

Whatman filter, Whatman paper, White ribbon filter, Z695424, 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 10300145
Whatman Article No. 28414123 (US reference)

parameter

70 sec/100 mL speed (Herzberg)

diam.

150 mm

thickness

180 μm

ash

≤0.01%

pore size

4-12 μm (Particle retention)

basis weight

85 g/m2

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General description

Whatman quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. They are available in three formats designed to meet your specific needs.

Ashless: 0.007% ash maximum for Grades 40 to 44 and a maximum of 0.01% for the 589 Grades-very pure filters suitable for a wide range of critical analytical filtration procedures.

Hardened low ash: 0.015% ash maximum-treated with a strong acid to remove trace metals and produce high wet strength and chemical resistance. These filters are particularly suitable for Büchner filtration where the tough smooth surface of the filter makes it easy to recover precipitates.

Hardened ashless: 0.006% ash maximum-acid hardened to give high wet strength and chemical resistance with extremely low ash content. The tough surface makes these filters suitable for a wide range of critical filtration procedures.

Grade 589/2 ½ : 4-12 μm (medium fast filter paper)
′White Ribbon Filter′, prepleated ashless standard filter paper for medium fine precipitates (class 2b acc. to DIN 53 135) offering medium filtration speed. Applied in a variety of routine methods in quantitative analysis, e.g., determination of the sand content in foodstuffs; determination of the grade of flour; or analysis of aqueous suspensions in the paper industry.

Features and Benefits

  • High purity (< 0.01% ash)
  • Retention of medium fine precipitates, such as grains of sand
  • Herzberg filtration speed of 140 s*
  • White ribbon filter

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

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