WHA1004400

Whatman^® qualitative filter paper, Grade 4

circles, diam. 400 mm, pack of 100

• Synonyme(s) : Whatman filter, Whatman filters, Whatman paper, Z240621, 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 1004-400; Whatman Article No. 28414021 (US reference)
• Paramètres: 0.22 psi wet burst; 37 sec/100 mL speed (Herzberg)
• Diamètre: 400 mm
• Épaisseur: 205 μm
• Cendres: ≤0.06%
• Dimension de pores: 20-25 μm (Particle retention)
• Poids de base: 92 g/m²

Description

Description générale

Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper.

Excellent retention: captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Fast filtration: useful for routine clean-up of biological fluids or organic extracts during analysis

Grade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.

Caractéristiques et avantages

• Useful in qualitative analytical separations when Fast flow is required and the collection of fine particles is not critical.
• These cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).

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