WHA1452090

Whatman^® quantitative filter paper, hardened low-ash, Grade 52

circles, diam. 90 mm, pack of 100

• Synonym(s): Z241830
• UNSPSC Code: 41104900
• NACRES: NB.24

Properties

• material: circles ; cotton filters (high-quality cotton linters)
• packaging: pack of 100
• manufacturer/tradename: Whatman 1452-090; Whatman Article No. 28418101 (US reference)
• parameter: 235 sec/100 mL speed (Herzberg); 7 psi wet burst
• diam.: 90 mm
• thickness: 175 μm
• ash: ≤0.015%
• pore size: 7 μm (Particle retention)
• basis weight: 101 g/m²

Description

General description

The maximum ash content of these filter paper grades is intermediate between ashless and qualitative grades. They are particularly suitable for Büchner filtrations where it is desirable to recover the precipitate from the filter surface after filtration. Other characteristics include high wet strength and chemical resistance which are similar to the acid hardened ashless filter papers.

Grade 52: 7 μm (medium filter paper)
The general purpose hardened filter paper with medium retention and flow rate. Very hard surface.

Features and Benefits

• Manufactured from high-quality cotton linters and treated to remove trace metals
• High wet-strength and chemical resistance
• Nominal particle retention of 7 µm
• Medium flow rate (Herzberg filtration speed 235 s)
• High purity (0.015% ash maximum)
• Compatible with Hirsch or Büchner funnel applications

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