GE Whatman QM-A Quartz Microfiber Air Sampling Filters

GEs 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. Temperature resistant up to 800°C and binder-free. 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 GE come in a wide range of circle diameters, as well as 25-piece sheets. QM-A sheets (Cat. No. 889-14536, 889-14542, and 889-14614) are sequentially numbered according to U.S. Environmental Protection Agency (EPA) standards and are suitable for most applications.

Specifications:
• Grade: QM-A
• Nominal Air Flow Rate: 6.3 s/100 mL/in.²
• Nominal Thickness: 475 µm
• Nominal Basis Weight: 85 g/m²
• Max. recommended temperature: 800°C
• Material: High-purity quartz (SiO₂)
• Binder Type: Binder Free
Image(s) are representative of the product group and not necessarily the individual product.

Sheets
Size: 8 x 10 in.
Qty/PK: 25

Circles
Size: 25 mm
Qty/PK: 100

Circles
Size: 32 mm
Qty/PK: 100

Circles
Size: 37 mm
Qty/PK: 100

Circles
Size: 47 mm
Qty/PK: 100

Circles
Size: 50 mm
Qty/PK: 100

Circles
Size: 55 mm
Qty/PK: 100

Circles
Size: 82 mm
Qty/PK: 100

Circles
Size: 85 mm
Qty/PK: 100

Circles
Size: 90 mm
Qty/PK: 100

Circles
Size: 101.6 mm
Qty/PK: 100

Circles
Size: 110 mm
Qty/PK: 100

Circles
Size: 118 mm
Qty/PK: 100

Circles
Size: 150 mm
Qty/PK: 100