SKC Silver Membrane Filters
SKC silver membrane filters are made of 99.97% pure metallic silver in a controlled environment. The many desirable properties of silver membranes make them suitable for a wide range of applications.
The orientation of a silver membrane filter is important. Each side of the silver membrane filter is different. One side appears shinier than the other side does. Use the shinier side for scanning electron microscopy (SEM) and the duller of the two sides for all other filtration applications and analytical work, including X-ray diffraction. A smooth surface provides for superior collection of particulates with a typical aerosol retention of 99.99% (0.3-µm DOP at 3 L/min through 10 cm2).
Chemically resistant to:
Silver Membrane Filters
Product Data Bulletin (PDF)
|Membrane Material||99.97% pure metallic silver|
|Characteristics||Conductive, excellent chemical resistance, inert, reusable|
|Pore Sizes Available||0.2, 0.45, 0.8, 1.2, 3.0, and 5.0 µm|
|Diameters Available|| 13, 25, 37, and 47 mm
|Thickness||0.002 in/50 µm|
|Operational Temperature Range||Cryogenic to 1022 F (550 C)|
|Retention||Absolute from 0.2 to 5 µm|
Clean immediately after each use; handle carefully to avoid punctures or tears.
|Ignition Cleaning||Heat in laboratory muffle furnace for approximately 30 minutes.|
|Chemical Cleaning||Immerse in strong alkaline solution, solvent,
or acid (except nitric acid, sulfuric acid, or cyanide solution).
|Combination Cleaning||Combine chemical and ignition cleaning.|
|Ultrasonic Cleaning||Use low-intensity ultrasonics.|
|Plasma Etching/Cleaning||Use oxygen plasma etcher/asher.|
|Opened Packages||Silver membranes can tarnish if exposed to chemicals in the air. This is cosmetic and will not affect filtration properties. For long-term storage after opening, an inexpensive vacuum desiccator cabinet is recommended.|
SKC Silver Membrane Filter Applications
Silver Membrane Filters
|Diameter (mm)|| Pore Size
Other pore sizes, diameters available as custom order. Contact SKC
Sales for more information.
Preloaded Coated Silver Membrane Filters
|PTFE pre-filter and porous plastic support, specially cleaned silver membrane and porous plastic support loaded into 3-piece 25-mm cassette for sampling bromine or chlorine using NIOSH Method 6011||5|
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, contact your SKC representative, or call the SKC Sales Department at 724-941-9701 for more information.