WHA10300143

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

circles, diam. 110 mm, pack of 100

• Synonym(e): Whatman filter, Whatman paper, White ribbon filter, Z695416, paper filter
• UNSPSC-Code: 41104900
• NACRES: NB.24

Eigenschaften

• Materialien: cellulose filters; circles
• Verpackung: pack of 100
• Hersteller/Markenname: Whatman 10300143; Whatman Article No. 28414122 (US reference)
• Parameter: 70 sec/100 mL speed (Herzberg)
• Durchmesser: 110 mm
• Dicke: 180 μm
• Asche: ≤0.01%
• Porengröße: 4-12 μm (Particle retention)
• Grundgewicht: 85 g/m²

Beschreibung

Allgemeine Beschreibung

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 1/2: 4-12 μm
′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.

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.

Leistungsmerkmale und Vorteile

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

Sonstige Hinweise

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Rechtliche Hinweise

Whatman is a registered trademark of Cytiva