SKC Filter Selection Guide

Material	Abbr.	Common Pore Sizes	Main Properties	Air Sampling Applications
Mixed Cellulose Ester	MCE or MEC	0.45 µm 0.8 µm 1.2 µm 5.0 µm	Hydrophilic Readily soluble for atomic absorption analysis Readily rendered transparent for transmitted light microscopy Dissolve and clear easily	Metal dust analysis Asbestos and man-made fibers
Polyvinyl Chloride (Pure Homopolymer) GLA-5000	PVC or PH-PVC	0.5 µm 0.8 µm 5.0 µm	Hydrophobic Non-oxidizing surface Silica-free Low ash Low tare weight for gravimetric analysis	Gravimetric analysis Hexavalent chromium
Polytetrafluoroethylene	PTFE	0.5 µm 1.0 µm 2.0 µm 5.0 µm	Hydrophobic Inert to solvents, acids, and bases Autoclavable	Alkaline dusts Polynuclear aromatics Pesticides Isocyanates
Polycarbonate	PC	0.3 µm 0.4 µm 0.8 µm	Hydrophobic Microscopically smooth surface Straight-through pores Extremely thin (10 to 20 µm) and transparent Autoclavable	Scanning electron microscopy Asbestos fibers
Silver	AG	0.45 µm 0.8 µm	Wide solvent compatibility Higher temperature tolerance Autoclavable Uniform porosity and thickness	Bromine Asbestos by TEM Silica by x-ray diffraction
Glass Fiber	GF or FG	Liquid Nominal Rating 1.0 µm	Partially hydrophobic Higher temperature tolerance Autoclavable High particulate retention	Pesticides Ethylene glycol Coarse gravimetric Isocyanates
Quartz	QZ	Liquid Nominal Rating 1.2 µm	Same as fiber glass Autoclavable Low level metals content High temperature 300 C	Gases Aerosols PM10 Diesel particulates
Cellulose	CEL	Nominal	Autoclavable Uniform strength Ashless (Type 40)	AA HPLC

Air Monitoring Cassette Blanks

Air Monitoring Cassette Blanks
Diameter (mm)	Type	Material/Properties	Qty.	Cat. No.


25	2-piece	Styrene, clear	50	225-2-25LF
25	2-piece	Styrene, clear	100	225-2258
25	3-piece	Styrene, clear	50	225-3-25LF
25	3-piece	Styrene, clear	100	225-2259
25	Middle ring	Styrene, clear, 1/2 inch height	50	225-304
25	Middle ring	For use with SKC Omega brand cassettes only	50	225-304
37	2-piece	Styrene, clear	10	225-2LF
			50	225-2050LF
			250	225-2250
37	3-piece	Styrene, clear	10	225-3LF
			50	225-3050LF
			250	225-3250
37	2-piece	Styrene, opaque brown	50	225-4
37	3-piece	Styrene, opaque brown	50	225-8451
25	Middle ring	Styrene, clear, 1/2 inch height	50	225-300R
25	Middle ring	For use with SKC Omega brand cassettes only	50	225-300R
Solvent-resistant* Air Monitoring Cassette Blanks
Compatible with most solvents*
Diameter (mm)	Type	Material/Properties	Qty.	Cat. No.


25	3-piece, goblet style	Polypropylene, opaque white	50	225-8585
37	2-piece	Polypropylene, opaque white	50	225-8483
37	3-piece	Polypropylene, opaque white	10	225-45
37	3-piece	Polypropylene, opaque white	50	225-45A
Conductive Air Monitoring Cassette Blanks
For reducing sample loss due to electrostatic effects; required for asbestos sampling
Diameter (mm)	Type	Material/Properties	Qty.	Cat. No.
25	3-piece, 2-inch middle cowl	Polypropylene, conductive black	50	225-3-23
25	2-piece	Polypropylene, conductive black	50	225-2257
25	3-piece 1/2-inch middle ring	Polypropylene, conductive black, with ½-inch spacer ring (rather than 2-inch cowl)	50	225-329
37	3-piece	Polypropylene, conductive black	50	225-309
37	2-piece	Polypropylene, conductive black	50	225-308
47	2-piece	Polypropylene, conductive black	16	225-8496
47	3-piece	Polypropylene, conductive black	16	225-8497

Sample preparation

SKC Filter Selection Guide

SKC Filter Selection Guide

Air Monitoring Cassette Blanks

Stratos Multi 4-wire, multiparameter, digital basic unit, 1-channel transmitter