Air, Gravimetric Analysis-Environmental QC

Membranes for Gravimetric Analysis

A/E Glass Fiber FiltersA/E Glass Fiber Filters

Binder-free borosilicate glass fiber is recommended by EPA for high-volume air sampling to collect atmospheric particles and aerosols.

Filter Media: Borosilicate glass without binder 
Pore Size: 1 µm (nominal)
Typical Filter Thickness: 330 µm (13 mils)
Typical Aerosol Retention (Following ASTM D 2986-95A, 0.3 µm DOP at 32 L/min/100 cm2 filter media: 99.98% 
Typical Air Flow Rate: 60 L/min/cm2 at 0.7 bar (70 kPa, 10 psi)
Typical Water Flow Rate: 250 mL/min/cm2 at 0.3 bar (30 kPa, 5 psi) 
Maximum Operating Temperature: Air 550 °C (1022 °F)

 

GLA-5000 PVC Membrane Disc Filters

GLA-5000 PVC Membrane Disc Filters

5 µm polyvinyl chloride (PVC) filters feature low ash, low moisture pickup, light tare weight, and are gravimetrically stable. Ideally suited for multiple NIOSH analytical methods including silica monitoring.

Filter Media: Polyvinyl chloride (PVC) 
Pore Size: 5 µm 
Typical Filter Thickness: 0.8 µm: 152 µm (6.0 mils)
Typical Aerosol Retention (Following ASTM D 2986-95A, 0.3 µm DOP at 32 L/min/100 cm2 filter media: 99.94% 
Typical Air Flow Rate: 53 L/min/cm2 at 0.7 bar (70 kPa, 10 psi)
Maximum Operating Temperature: Water 52 °C (125 °F)

 

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/cm2at 0.7 bar (70 kPa, 10 psi), 0.5 µm: 1, 1 µm: 14.6, 2 µm: 25.3, 3 µm: 53 
 


















Pall Preferred Online Lab Community

Emfab Pallflex Air Monitoring FiltersPallflex Emfab™

Borosilicate microfibers reinforced with woven glass cloth and bonded with PTFE. Flushed with DI water to remove water-soluble residue. Low moisture and low air resistance. Withstands folding for weighing and transport. Preferred filter for ambient air sampling and stack emission testing.

Filter Media: Borosilicate glass microfibers reinforced with woven glass cloth and bonded with PTFE
Typical Filter Thickness: 178 µm (7 mils)
Typical Filter Weight: 5.0 mg/cm2
Typical Aerosol Retention (Following ASTM D 2986-95A, 0.3 µm DOP at 32 L/min/100 cm2 filter media): 99.90%
Typical Air Flow Rate: 73 L/min/cm2 at 0.7 bar (70 kPa, 10 psi)
Typical Water Flow Rate: 220 mL/min/cm2 at 0.35 bar (35 kPa, 5 psi)
Maximum Operating Temperature: Air 1093 ºC (2000 ºF)

 

Pallflex Tissuquartz Air Monitoring Filters

Pallflex Tissuquartz™

Binder-free pure quartz offers superior chemical purity. High flow rate and filtration efficiency. Uniquely designed for air monitoring in high temperatures and aggressive atmospheres.

Filter Media: Pure quartz, no binder 
Typical Filter Thickness: 432 µm (17 mils)
Typical Filter Weight: 5.8 mg/cm2
Typical Aerosol Retention (Following ASTM D 2986-95A, 0.3 µm DOP at 32 L/min/100 cm2 filter media: 99.90%
Typical Air Flow Rate: 73 L/min/cm2 at 0.7 bar (70 kPa, 10 psi) 
Typical Water Flow Rate: 220 mL/min/cm2 at 0.35 bar (35 kPa, 5 psi)
Maximum Operating Temperature: Air 1093 ºC (2000 ºF)

 

Teflo PTFE Membrane Disc FiltersTeflo PTFE Membrane Disc Filters

PTFE with unique polymethylpentene (PMP) support ring for PM-10 dichotomous, PM-2.5, and other air sampling techniques. Offers increased durability and low chemical background
for X-ray fluorescence, radiometric or gravimetric techniques of elemental analysis.

Filter Media: PTFE with PMP (polymethylpentene) support ring
Typical Filter Thickness: 1 µm: 76 µm (3 mils), 2 µm: 46 µm (1.8 mils), 3 µm: 30.4 µm (1.2 mils)
Typical Aerosol Retention (Following ASTM D 2986-95A, 0.3 µm DOP at 32 L/min/100 cm2 filter media: 1 and 2 µm: 99.99%, 3 µm: 99.79%
Typical Air Flow Rate: L/min/cm2at 0.7 bar (70 kPa, 10 psi), 1 µm: 17, 2 µm: 53, 3 µm: 90

 

Devices for Diesel Fuel Analysis

37 mm Air Monitoring Cassettes
37 mm Air Monitoring CassettesIdeally suited for particulate and air sampling analysis using vacuum filtration. 



25 mm Open-face Delrin Holder
25 mm Open-face Delrin Holder Useful for low pressure, in-line air cleaning, liquid or sampling applications. 



37 and 47 mm Open-face Aluminum Holders
37 and 47 mm Open-face Aluminum Holders Lightweight, corrosion-resistant filter holders for routine air sampling.



Analyslide® Petri Dish
Analyslide Petri DishProtect the integrity of sample membrane during microscopic examination.