WHA1004185

Whatman^® qualitative filter paper, Grade 4

circles, diam. 185 mm, pack of 100

• Synonyme(s) : Whatman filter, Whatman filters, Whatman paper, Z240583, filter paper, filter papers, paper filter
• Code UNSPSC : 41104900
• Nomenclature NACRES : NB.24

Propriétés

• Matériaux: cellulose filters; circles
• Conditionnement: pack of 100
• Fabricant/nom de marque: Whatman 1004-185; Whatman Article No. 28414016 (US reference)
• Paramètres: 0.22 psi wet burst; 37 sec/100 mL speed (Herzberg)
• Diamètre: 185 mm
• Épaisseur: 205 μm
• Cendres: ≤0.06%
• Dimension de pores: 20-25 μm (Particle retention)
• Poids de base: 92 g/m²

Description

Description générale

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 4: 20-25 μm, (very fast filter paper)
Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Very useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis. Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Autres remarques

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

Informations légales

Whatman is a registered trademark of Cytiva