Whatman QM-A Quartz Microfiber Filters

Description

Temperature resistant up to 800°C
Binder-free

Whatman quartz microfiber filters

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.

Whatman QM-A filter circles and sheets

QM-A quartz microfiber filters from GE 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.

Parameter	Quartz Air Sampling Filter, Grade QM-A, circle & sheet
Application :	Used for air sampling in acidic gases, stacks, flues and aerosols, particularly at high temperatures up to 500° C and in PM-10 testing.Filters for Use in US EPA PM10 Ambient air monitoring.
Grade :	Grade QM-A
Nominal Air Flow Rate :	6.3 s/100 ml/in²
Nominal Thickness :	475 µm
Nominal Basis Weight :	85 g/m²
Max recommended temperature :	800 °C
Material :	High-purity quartz (SiO₂)
Binder Type :	Binder Free
Format & Dimension :	Circle – Ø 25 mm, Ø 32 mm, Ø 37 mm, Ø 47 mm, Ø 50 mm, Ø 55 mm, Ø 82 mm, Ø 85 mm, Ø 90 mm, Ø 101.6 mm, Ø 110 mm, Ø 118 mm, Ø 150 mm Sheet – 203.2 × 254 mm
Pack Size :	100 pieces – 5 mm, 32 mm, 37 mm, 47 mm, 50 mm, 55 mm, 82 mm, 85 mm, 90 mm, 101.6 mm, 110 mm, 118 mm, 150 mm, 203.2 × 254 mm (8 × 10 in) 25 pieces – 203.2 × 254 mm (8 × 10 in)