Air, Acid Rain Analysis-Environmental QC

Membranes for Acid Rain Analysis

Nylasorb Nylon Membrane Disc Filters

Nylasorb™ Nylon Membrane Disc Filters

Pure 1 µm nylon developed specifically for the requirements of acidic dry deposition (acid rain) measurements. Assures accurate analysis of sulfates and nitrates with low background levels of nitrates and sulfates.

Filter Media: Nylon  
Pore Size: 1 µm (nominal) 
Typical Filter Thickness: 90 µm (3 mils)
Maximum Operating Temperature: 180 ºC (356 ºF)

Zefluor PTFE Membrane Disc Filters

Zefluor™ PTFE Membrane Disc Filters

Low chemical background for highly sensitive determinations. Suited for monitoring acid rain, poly-nuclear aromatic hydrocarbons, and particulate. 0.5 µmpore size meets new NIOSH specifications.

Filter Media: PTFE with PTFE support
Pore Size: 0.5, 1, 2, and 3 µm  
Typical Filter Thickness: 0.5 µm: 178 µm (7 mils), 1 µm: 165 µm (6.5 mils), 2 and 3 µm: 152 µm (6 mils)
Typical Aerosol Retention (Following ASTM D 2986-95A 0.3 um DOP at 32 L/min/100 cm2 filter media: 0.5, 1, and 2 µm: 99.99%, 3 µm: 99.98%
Typical Air Flow Rate: L/min/cm2 at 0.7 bar (70 kPa, 10 psi), 0.5 µm: 1, 1 µm: 14.6, 2 µm: 25.3, 3 µm: 53

Devices and Accessories for Acid Rain Analysis

37 and 47 mm Open-faced Aluminum Filter Holders
37 and 47 mm Open-faced Aluminum Filter HoldersLightweight, corrosion-resistant filter holders for routine air sampling.  

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