Z741043

Whatman^® QM-A quartz filters

Circles, 50 mm 100/pk

• Synonym(s): glass fiber filters, quartz fiber filters
• UNSPSC Code: 41104900

Properties

• material: circles ; quartz membrane
• packaging: pack of 100
• manufacturer/tradename: Whatman 1851-050; Whatman Article No. 28418543 (US reference)
• diam.: 50 mm
• pore size: 2.2 μm
• suitability: suitable for (air sampling in acidic gases, stacks, flues and aerosols)

Description

General description

Cytiva′s high-purity quartz microfiber filters are used in many air sampling filter applications, including sampling of acidic gases, stacks, flues, and aerosols. Filters are suitable for PM-10 sampling and analysis. Because of the low level of alkaline earth metals, "artifact" products of sulfates and nitrates (from SO₂ and NO₂) are virtually eliminated. High-purity quartz microfiber filters are therefore applicable for particulate monitoring and heavy metal analysis. QM-A quartz microfiber filters from Cytiva come in a wide range of circle diameters, as well as 25-piece sheets. QM-A sheets (1851-8866) are sequentially numbered according to U.S. Environmental Protection Agency (EPA) standards and are suitable for most applications.

• Grade: QM-A
• Description: Quartz
• Particle Retention in Liquid (μm): 2.2
• Air Flow (s/100 mL/in²): 6.4
• Typical Thickness (μm): 450
• Basis Weight (g/m²): 85

Other Notes

This product has been replaced by WHA1851050-ALDRICH | Whatman QM-A quartz filters, Circles, 50 mm 100/pk

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