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Polycarbonate Membrane Filters

Polycarbonate Membrane Filters are ideal for microscopy.

  • 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
  • Exceptionally low tare weight
  • Biologically inert
  • Maximum operating temperature is 140°C (284°F)

  • Polycarbonate Membrane Filters

    Diameter (mm) Pore Size (µm) Support Pad included †   Pack Size Part Number
    25 0.4 No 100 225-1608
    25 0.8 No
    (use with IOM Sampler)    		 100 225-1601
    37 0.4 No 100 225-1609
    37 0.8 No 100 225-1602
    47 0.4 No 100 225-1610

    † Filter supports available

  • Preloaded Polycarbonate Filters

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

    Diameter (mm) Pore Size (µm) Support Pad included Cassette Description Pack Size Part Number  
    25 0.8 Yes 3-piece, conductive with cowl, banded 50 225-1604  225-1604 Preloaded Polycarbonate Filters in 3-piece conductive cassette, diameter 25mm, pore size 0.8 µm 
    37 0.4 Yes 3-piece styrene (non-conductive with nozzle, microvacuum Each 225-9542 *  225-9542 Preloaded Polycarbonate Filters in 3-piece styrene cassette with nozzle, diameter 37mm, pore size 0.4 µm 
    Cassette Opener, stainless steel, suitable for 25, 37, and 47-mm filter cassettes.
    Required for all SureSeal Cassettes.    		 Each 225-13-5B  225-13-5B SureSeal Cassette Opener, for opening 25 or 37 mm cassettes 

    * Available in a Carpet Sampling Kit.

    Preloaded Polycarbonate Filters

    225-1604

    Preloaded Polycarbonate Filters

    225-9542

    SureSeal Cassette Opener

    225-13-5B

Read more …Polycarbonate Membrane Filters

Gelatin Filters

Ideal for maintaining the viability of collected microorganisms, the Gelatin Filters provide unequalled bacteria retention levels for quantitative analysis. The high moisture content helps to maintain microorganism viability for sampling periods up to 30 minutes. The filters dissolve easily when placed on agar, allowing for a gentle transition from sample medium to growth medium. For maximum culturability and superior collection of inhalable-size bioaerosols, combine 25 mm gelatin filters with the SKC Button Sampler.

  • Absolute retention rate:
    • 99.9995% for Bacillus subtilis var. niger spores ‡  
    • 99.94% for T3 phages (coliphages) ‡  
    • 99.9% for T1 phages (coliphages) ‡  
  • High moisture content
    • Maintain microbe viability for short sampling periods
  • Completely water soluble
    • Dissolve easily when placed on agar
    • Prerequisite for virus sampling
  • Pre-sterilised by gamma irradiation
  • Ideal for monitoring in pharmaceutical plants
  • Can be used to monitor in areas where disinfectants or antibiotics are present

‡ At inlet velocities of 0.25 m/s, 0.3 m/s (80 %RH), and 0.3 m/s (50 %RH) respectively

  • Specifications

    Material

      

    		 Water-soluble gelatin
    Pore Size

      

    		 While having a nominal pore size of 3 µm, a higher capture efficiency of sub-micron particles can be expected due to the separations that occur on the surface and within the filter. It is through inertial impaction and diffusional interception that these filters can remove particles much smaller than 3 µm.
    Thickness

      

    		 Approximately 250 µm
    Sterilisation

      

    		 Presterilised by gamma radiation. Filters individually wrapped and packaged in units of five, each in a polyethylene bag.
    Thermal Resistance

      

    		 Maximum 60°C (140°F)
    Residual Dampness Content

      

    		 46 to 49%
    Conditions for Use

      

    		 Maximum room temperature is 30°C (86°F); maximum relative humidity is 85%.
    Sampling Time

      

    		 30 minutes at typical indoor relative humidity
    Sampling Flow Rate

      

    		 1 to 4 L/min for filter sampling of biological contaminants using a standard filter cassette, Button Sampler, or the IOM
    Storage

      

    		 Gelatin filters may be stored in low humidity, ambient conditions; storage between 4 and 8°C (39.2 and 46.4°F) is recommended.
    Caution: Do not store gelatin filters below 4°C (39.2°F). Condensation during thawing will dissolve filter. Avoid exposing filters to moisture, chemical vapors, and extreme temperatures.
    Shelf-life

      

    		 3 years from date of manufacture
    Analysis

      

    		 Direct method or indirect method. Gelatin filters dissolve when placed on agar plates.

  • Applications

    • Indoor Air Quality (IAQ)
    • Outdoor environmental measurements
    • Clean Room Monitoring
    • Veterinary clinics
    • Hospitals
    • Pharmaceutical manufacturing
    • Military

  • Gelatin Filters

    Diameter (mm) Support Pad included Notes Pack Size Part Number
    25 No Water soluble 50 225-9551  †   *  
    37 No Water soluble 50 225-9552  *  

    † Recommended for use with IOM and Button Samplers

    * Storage at 4 and 8°C (39.2 and 46.4°F) recommended. Avoid temperatures <4°C (39.2°F), moisture, and chemical vapours

  • Documentation

    Gelatin Filters Instructions

    Gelatin Filters
    Instructions

Read more …Gelatin Filters

Cellulose Depth Filters

  • Ideal for gravimetric sampling, collection of organic/inorganic precipitates, and AA (Atomic absoprtion) and HPLC (High-Performance Liquid Chromatography) methods requiring an ashless filter
  • 100% pure, ashless type 40 quantitative cellulose fibre
  • Autoclavable
Diameter (mm) Support Pad included †   Notes Pack Size Part Number
37 No Cellulose, ashless, equivalent to Whatman Type 40 500 225-18A

† Filter supports available

Read more …Cellulose Depth Filters

Quartz Depth Filters

Quartz depth filters are used for sampling for elemental/organic carbon, Diesel Particulate Matter (DPM) and trace-level contaminants.

  • Heat treated to reduce trace organics
  • Binder free for maximum purity
  • Low metal background
  • Will withstand temperatures up to 1000°C (1832°F)

Filter Type

  • Type R-100 Filters meet specific requirements set forth by NIOSH - 99.97% retention efficiency for 0.3 µm diocrylphthalate (DOP) particles up to a 200 mg filter loading. 
  • Tissuquartz™ Filters have a typical retention efficiency of 99.90% for 0.3 µm DOP particles at 32 L/min per 100 cm2 filter media.

  • Type R-100 Quartz Depth Filters

    Type R-100 Filters meet specific requirements set forth by NIOSH - 99.97% retention efficiency for 0.3 µm diocrylphthalate (DOP) particles up to a 200 mg filter loading.

    Diameter (mm) Notes Pack Size Part Number
    25 Type R-100, 1.2 µm nominal pore size, 380 µm thick 100 225-1824
    37 Type R-100, 1.2 µm nominal pore size, 380 µm thick 100 225-1827
    47 Type R-100, 1.2 µm nominal pore size, 380 µm thick 100 225-1830

  • Type Tissuquartz Depth Filters

    Tissuquartz™ Filters have a typical retention efficiency of 99.90% for 0.3 µm DOP particles at 32 L/min per 100 cm2 filter media.

    Diameter (mm) Notes Pack Size Part Number
    25 Tissuquartz, 432 µm thick 100 225-1825
    37 Tissuquartz, 432 µm thick 25 225-1822
    47 Tissuquartz, 432 µm thick 25 225-1823
    102 QM-A 450 µm thick 100 225-1808

  • Preloaded Quartz Filters for DPM (Diesel Particulate Matter) Sampling

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

    Diameter (mm) Filter and Cassette Specifications Pack Size Part Number  
    25 Quartz, heat treated; Tissuquartz; 3-piece clear styrene, banded; meets NIOSH NEAT 2.0 protocol for NIOSH 5040 specifications 50 225-401-25  225-401-25 Preloaded Quartz Filters for DPM (Diesel Particulate Matter) Sampling in a 3-piece clear cassette and meets NIOSH 5050 specifications, filter diameter 25mm 
    37 Quartz, heat treated; 3-piece clear styrene, banded; meets NIOSH 5040 specifications 50 225-401  225-401 Preloaded Quartz Filters for DPM (Diesel Particulate Matter) Sampling in a 3-piece clear cassette and meets NIOSH 5050 specifications, filter diameter 37mm 
    Cassette Opener, stainless steel, suitable for 25, 37, and 47-mm filter cassettes.
    Required for all SureSeal Cassettes.    		 225-13-5B  225-13-5B SureSeal Cassette Opener, for opening 25 or 37 mm cassettes 
    Preloaded Quartz Depth Filters

    225-401-25/225-401

    SureSeal Cassette Opener

    225-13-5B

  • Preloaded Quartz Filters for NIOSH Method 7908

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

    Diameter (mm) Filter and Cassette Specifications Pack Size Part Number  
    37 Tissuquartz filter, 2-piece clear plastic casette, banded. For use with method NIOSH 7908. 10 225-9033  225-9033 Coated Filter for use with NIOSH Method 7908 
    Cassette Opener, stainless steel, suitable for 25, 37, and 47-mm filter cassettes.
    Required for all SureSeal Cassettes.    		 225-13-5B  225-13-5B SureSeal Cassette Opener, for opening 25 or 37 mm cassettes 

    Preloaded Quartz Depth Filters

    225-9033

    SureSeal Cassette Opener

    225-13-5B

    Coated Filter 225-9033 Instructions

    Coated Filter 225-9033
    Instructions

Read more …Quartz Depth Filters

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. 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 inert and resistant to high temperatures, up to 500°C (1022°F)
    • Sample aggressive contaminants
    • Autoclave repeatedly without loss of performance
  • Uniform porosity and thickness
  • Ideal for x-ray diffraction and other analyses
    • NIOSH methods for x-ray diffraction analysis of crystalline silica, lead sulphide, boron carbide, and chrysolite asbestos
    • Organic materials by a variety of analytical methods
  • Smooth surface for high surface capture of particles and easy observation
  • Environmentally friendly — recyclable
    • Can be cleaned and reused

  • Applications

    • Collection and analysis of coke oven emissions
    • Collection and analysis of polyaromatic hydrocarbons
    • Analysis of airborne silica
    • Collection and analysis of airborne asbestos fibres by X-ray diffraction
    • Collection and analysis of carbon and carbon black
    • Collection and analysis of fly ash directly from smoke stacks
    • Analysis of biological specimens by scanning electron microscopy, especially when being collected from suspension
    • Dimensional preservation of specimens during freeze-drying
    • Filtration of alcoholic beverages
    • High temperature processing of viscous materials
    • Performing mild chemical digestion directly at filter surface
    • High temperature stack sampling
    • High temperature sterilisation procedures
    • Filtration involving organic solvents

  • Chemical Resistance

    Silver membrane filters are chemically resistant to the following categories of chemicals:

    • Alcohols • Ether • Fuel
    • Propellants • Hydrocarbons • Oxidisers
    • Natural and synthetic oils • Halogenated hydrocarbons • Alkalis
    • Esters • Cryogenics • Most organics and acids
    • Photoresists    

  • Silver Membrane Filters

    Diameter (mm) Pore Size (µm) Support Pad included †   Pack Size Part Number
    25 0.45 No 50 225-1802
    25 0.8 No 50 225-1803
    37 0.8 No 25 225-1801
    47 0.8 No 25 225-1804

    † Filter supports available

  • Preloaded Coated Silver Membrane Filters

    Diameter (mm) Filter and Cassette Specifications Pack Size Part Number  
    25 PTFE pre-filter and porous plastic support, specially cleaned silver membrane and porous plastic support, loaded into 3-piece cassette for sampling bromine or chlorine using NIOSH Method 6011 5 225-9006  225-9006 Preloaded Coated Silver Membrane Filters in a 3-piece cassette 
    Cassette Opener, stainless steel, suitable for 25, 37, and 47-mm filter cassettes.
    Required for all SureSeal Cassettes.    		 225-13-5B  225-13-5B SureSeal Cassette Opener, for opening 25 or 37 mm cassettes 
    Preloaded Silver Membrane FIlter

    225-9006

    SureSeal Cassette Opener

    225-13-5B

Read more …Silver Membrane Filters

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