Teflon Filters
(Polytetrafluoroethylene Filters) (PTFE)

5.0 µm and 60 µm pore sizes	0.5 µm, 1.0 µm and 2.0 µm pore sizes

• Chemically resistant



• Hydrophobic



• Low background, interference-free chemical determinations



• Low tare mass for accurate gravimetric results



• Autoclavable



• Meet OSHA, NIOSH, and EPA method specifications

SKC PTFE filters are strong and completely resistant to acids, bases, and all solvents. Use PTFE filters when sampling in aggressive environments. A low chemical background makes PTFE filters ideal for sampling low concentration contaminants. Naturally hydrophobic, PTFE filters feature a low tare mass for accurate gravimetric determinations SKC PTFE filters are temperature-stable to 527 F (275 C). The maximum operating temperature for Teflon filters with PMP support ring is 464 F (240 C). PTFE filters are prone to static effects. For the most accurate sampling use a static eliminator.

 

Ordering Information    

Diameter (mm)	Pore Size (µm)	Support Pad Included	Notes	Qty.	Cat. No.
13	5.0	No	unlaminated	100	225-17-03
25	0.5	No	with PTFE support	100	225-2708
25	1.0	No	with laminated PTFE support	100	225-2714
25	2.0	No	with laminated PTFE support	100	225-2726
25	3.0	No	with PMP support ring †‡	50	225-1711
25	5.0	No	unlaminated	50	225-1728
37	0.3	No	PTFE, not-sterilized * for Anthrax and SARS, available in ready-to-use preloaded cassettes	100	225-1722
37	0.45	Yes	on polypropylene support	100	225-17-04
37	0.5	No	with PTFE support and hole for Respicon™ Sampler	50	225-1762
37	1.0	Yes	on polypropylene support	100	225-17-01
37	1.0	No	with PTFE laminated support	50	225-2705
37	2.0	Yes	with laminated PTFE support	50	225-27-07
37	2.0	No	with PMP support ring ‡	50	225-1709
37	5.0	Yes	unlaminated	50	225-17A
37	10.0	No	unlaminated	100	225-1729
47	0.5	No	with laminated PTFE support	50	225-2753
47	1.0	No	with laminated PTFE support	50	225-2749
47	2.0	No	with PMP support ring ‡	50	225-1747
47	2.0	No	with laminated PTFE support	50	225-2748
47	5.0	No	unlaminated	100	225-1724
47	60.0	No	unlaminated	100	225-1755

†	Recommended for use with the Button Sampler
*	Recommended for Anthrax and SARS
‡	The maximum operating temperature for Teflon filters with PMP support ring is 464 F (240 C)

 

Filter/Cassette Solvent Compatibility Chart (HTML)

Filter/Cassette Solvent Compatibility Chart (PDF)

Filter FAQs

MSDS — Teflon (PTFE, Polytetrafluoroethylene) Filters

 

Specialty PTFE Filters for the Respicon™ Sampler

Specialty PTFE Filters
Diameter (mm)	Pore Size (µm)	Support Pad Included	Notes	Qty.	Cat. No.
37	0.5	No	with PTFE support and hole for the Respicon™ Sampler	50	225-1762

 

Preloaded PTFE Filters
All SKC preloaded filters are in SureSeal* leak-free cassettes

Ordering Information    

Diameter	Filter and Cassette Specifications	Qty.	Cat. No.
25 mm	PTFE, 1.0 µm with PTFE support and porous plastic pad loaded in conductive 2-pc cassette	50	225-1725
25 mm	PTFE, 1.0 µm with polypropylene support pad preloaded into 2-pc goblet-style black conductive cassette	50	225-1751
25 mm	PTFE, 1.0 µm with cellulose support pad preloaded into 2-pc goblet-style conductive cassette	50	225-1716
25 mm	PTFE, 2.0 µm filters with 60 µm laminated support and polypropylene support pad preloaded into 2-pc goblet-style black conductive cassette	50	225-1750
37 mm	PTFE, 0.3 µm, unsterilized 3-pc cassette banded, recommended for Anthrax and SARS	50	225-1723
37 mm	Zefluor PTFE, 1.0 µm with 60 µm laminated PTFE support, preloaded in a 3-pc, clear styrene (traditional style) cassette, banded	50	225-1715
37 mm	Zefluor PTFE, 2.0 µm with PTFE support, 2-pc plastic cassette with spacer ring, banded	50	225-1713

* SureSeal leak-free cassettes require the use of a SureSeal Cassette Opener 225-13-5A

Filter/Cassette Solvent Compatibility Chart (HTML)

Filter/Cassette Solvent Compatibility Chart (PDF)

MSDS — Teflon (PTFE, Polytetrafluoroethylene) Filters

PTFE for Anthrax and SARS

NIOSH is currently using non-sterilized PTFE filters to sample for Severe Acute Respiratory Syndrome (SARS). These filters are also suitable for sampling Anthrax.

Diameter (mm)	Pore Size (µm)	Notes	Cassette Description	Qty.	Cat. No.
37	0.3	not sterilized**	filters only	100	225-1722
37	0.3	not sterilized**	3-pc styrene	50	225-1723

**	Sterilization is not required because analysis is very specific and does not have interferences.

Filter/Cassette Solvent Compatibility Chart (HTML)

Filter/Cassette Solvent Compatibility Chart (PDF)

MSDS — Teflon (PTFE, Polytetrafluoroethylene) Filters

 

A typical filter will have a rough side and a shiny side. The shiny side is easier to read under a microscope, therefore, expose the shiny side to the air for microscopic analysis. The rough side holds dust more effectively; expose the rough side for gravimetric analysis.

Custom Filters Available

For specific applications, SKC will manufacture filters to meet your specific requirements. Download the Custom Filter Order Form in PDF format. Complete the form and fax it to your SKC representative, or contact your SKC representative, or call the SKC Sales Department at 724-941-9701 for more information.

Custom Filters Order Forms (PDF Format)

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This page was last modified June 11, 2009