Z241504

Whatman^® quantitative filter paper, hardened ashless, Grade 542

circles, diam. 185 mm, pack of 100

• Synonym(s): Whatman filter, filter paper, paper filter
• UNSPSC Code: 41104900

Properties

• material: circles ; cotton filters (high-quality cotton linters)
• packaging: pack of 100
• manufacturer/tradename: Whatman 1542-185; Whatman Article No. 28418253 (US reference)
• parameter: 2510 sec/100 mL speed (Herzberg); 6 psi wet burst
• diam.: 185 mm
• thickness: 150 μm
• ash: ≤0.006%
• pore size: 2.7 μm (Particle retention)
• basis weight: 93 g/m²

Description

General description

These are the supreme hardened ashless quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.

Grade 542: 2.7 μm (slow filter paper)
High retention of fine particles under demanding conditions. Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations.

Other Notes

This product has been replaced by WHA1542185-ALDRICH | Whatman quantitative filter paper, hardened ashless, Grade 542, circles, diam. 185 mm, pack of 100

Global SIAL customers (excluding Japan) can now order any product from the Cytiva Life Sciences consumables portfolio (prepack only) using GE′s product numbering system.

The legacy GE Whatman products that use the SIAL "Z" product numbering system will be discontinued and directly replaced with a product number using a "WHA" prefix plus the GE product code. For reference, the legacy "Z" product number is identified as a synonym on the "WHA" product number listing.

Legal Information

Whatman is a registered trademark of Cytiva