Air, Silica Testing-Environmental QC

Membranes for Silica Testing

GLA-5000 PVC Membrane Disc Filters GLA-5000 PVC Membrane Disc Filters5 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)


GN-4 Metricel® MCE Membrane Disc Filters GN-4 Metricel® MCE Membrane Disc FiltersMixed cellulose esters that dissolve completely using standard digestion procedures. These membranes clear completely, possess low artifacts, and offer minimal interference in fiber counting.

Filter Media: Hydrophilic mixed cellulose esters
Pore Size: 0.8 µm 
Typical Filter Thickness: 152 µm (6 mils)
Typical Filter Weight: 4 mg/cm2
Typical Air Flow Rate: 55 L/min/3.7 cm2 at 0.9 bar (90 kPa, 13.5 psi)
Typical Water Flow Rate: 55 L/min/3.7 cm2 at 0.9 bar (90 kPa, 13.5 psi)
Maximum Operating Temperature:Water 74 ºC (165 ºF)

Devices for Silica Testing

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

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

Pall Preferred Online Lab Community