WHA1002090

Whatman^® qualitative filter paper, Grade 2

circles, diam. 90 mm, pack of 100

• Sinônimo(s): Whatman filter, Whatman paper, Z240214, paper filter
• Código UNSPSC: 41104900
• NACRES: NB.24

Propriedades

• Materiais: cellulose filters; circles
• embalagem: pack of 100
• fabricante/nome comercial: Whatman 1002-090; Whatman Article No. 28413957 (US reference)
• Parâmetros: 0.29 psi wet burst; 240 sec/100 mL speed (Herzberg)
• Diâmetro: 90 mm
• espessura: 190 μm
• cinzas: ≤0.06%
• tamanho de poro: 8 μm (Particle retention)
• peso base: 97 g/m²

Descrição

Descrição geral

This certified Grade 2 is tested according to the procedure detailed in ASTM E 2187-09, Sections 9.3.1 and 9.3.2. The paper meets both the conditioned (26.1 ± 0.5 g, SD < 0.3 g) and dried (24.7 ± 0.5 g, SD < 0.3 g) weight requirements.

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 2: 8 µm

Slightly more retentive than Grade 1 with a corresponding increase in filtration time (i.e., slightly slower filtration speed). More absorbent than Grade 1. In addition to general filtration in the 8 µm particle size range, the extra absorbency is utilized, for example, to hold soil nutrient in plant growth trials. Also used for monitoring specific contaminants in the atmosphere and in soil testing. Also available prepleated as Grade 2V.

Características e benefícios

• Each lot is guaranteed to meet the ASTM E 2187-09 specifications
• Simplifies testing process by removing lot suitability testing
• Just condition and use

Outras notas

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

Informações legais

Whatman is a registered trademark of Cytiva