Polycarbonate Membrane Filters *

• Smooth surface for superior particle capture



• Thin, transparent, and non-staining
• Ideal for light and electron microscopy
• Exceptional background for sample observations


• Superior chemical resistance, thermal stability, and strength
  
  
• Naturally hydrophobic
• Exceptionally low tare weight
  
  
• Biologically inert

Ordering Information        

Diameter (mm)	Pore Size (µm)	Support Pad Included	Qty.	Cat. No.
25	0.4	No	100	225-1608
25	0.8	No use with IOM	100	225-1601
37	0.4	No	100	225-1609
37	0.8	No	100	225-1602
47	0.4	No	100	225-1610
47	0.8	No	100	225-1603

Filter FAQs

Preloaded Polycarbonate Filters *
All SKC preloaded filters include supports and are in SureSeal leak-free cassettes that require a SureSeal Cassette Opener.

Ordering Information    

Diameter (mm)	Pore Size (µm)	Support Pad Included	Description	Qty.	Cat. No.
25	0.8	Yes	3-piece, banded, black conductive polypropylene cassette (goblet style with extension cowl) for TEM analysis	50	225-1604

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.

Filter pore size ratings are based on liquid filtration ratings. Filters will retain much smaller particles from air (e.g. a 0.8-µm liquid rated filter will retain > 50% of particles as small as 0.08 µm).

* PRODUCT NOTE ON POLYCARBONATE-BASED FILTERS 25 JANUARY 2006
The manufacturer of polycarbonate filter materials has reported to SKC that it has changed the base material. The previous material is discontinued and no longer available. TEM microscopists will note a visible change in the new material.

All polycarbonate-based filters will now have two distinct sides: one shiny and one rough. The difference is amplified when the filter surface is viewed under high magnification such as that used in electron microscopy. See the following guideline for use:

Position the filter in the cassette so that the shiny side collects the contaminant. The shiny side is the smoothest and provides a very flat surface amenable to microscopic analysis. The rough side would not be appropriate for microscopy as many particles would be out of the microscope's focal plane.

Please contact SKC at skctech@skcinc.com if you have further questions.

Filter FAQs

Filter/Cassette Solvent Compatibility Chart (HTML)

Filter/Cassette Solvent Compatibility Chart (PDF)

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, contact your SKC representative, or call the SKC Sales Department at 724-941-9701 for more information.

Custom Filters Order Form (PDF)

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This page was last modified February 25, 2010