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Item Number: 7M93M-SB

CASSETTE, 37MM 3PC, 0.8µm MCE MW, SEC BAND, 50/BX

37mm 3-piece air sampling filter cassette preloaded with 0.8 micron MCE filters that are matched in weight to within 50µg. Includes security band.
Item Number: 7M93M-SB
Manufacturer: Zefon International
Availability: In Stock

Gravimetric analysis samples require filters to be weighed both before and after sampling to determine the amount of contaminate collected. Zefon match-weighed cassettes eliminate the need of weighing filters before sampling by providing 2 filters which are matched in weight. The top filter collects particulate and the bottom filter serves as a control. After sampling, both filters are weighed and the difference in weight equals the amount of contaminate collected.

Zefon uses the most advanced microbalance equipment and technology available to produce premium quality weighed cassettes. Our process includes manufacturing under strict environmental controls to ensure weight reproducibility and numerous quality checks to ensure consistent weights. The end result is a quality product at a competitive price.

The weight tolerance of match weighed filters references the maximum difference in weight from the test (top) filter and the control (bottom) filter. For example, a stated tolerance of 50μg means that the control filter may differ in weight no more than 50μg from the test filter. This is important to know during post sample weighing as the weight tolerance of the 2 filters needs to be considered when calculating results.

During manufacture, filters with matched weights (within the given tolerance) are inserted into the cassette in random order. Thus, it is possible for the control filter to weigh more than the test filter before sampling (within the given tolerance). If the control filter still weighs more after sampling, a sample likely was not collected. Please check your equipment for proper operation and pump flow.

Features: 

  • Weight matching tolerance: ±20 μg for PVC Filters and ±50 μg for MCE Filters
  • Choice of 2 or 3 piece cassette housing
  • Available in both 25mm and 37mm diameter cassette housings 
  • Labels with serial numbers placed on each cassette 
  • Easy Filter Type Identification:
    Red colored band indicates a PVC Filters
    Blue colored band indicates MCE Filters 
  • Preloaded - ready to use 
  • Leak Free Design

Cross-reference of Zefon’s Products with other Manufacturers*

 Zefon Product Number  SKC Product Number 
 5M92M   225-525
 5M93M  N/A
 7M92M  225-502 OR 225-3-02 (50 pack)
 225-527 (12 pack)
 7M93M  225-503 (50 pack)
 225-528 (12 pack)

*The above table of cross-referenced product information is for comparison purposes only. Zefon is not affiliated with any of the manufacturers and providers listed in the table above. Zefon sells its own products under its own part numbers and does not offer or sell the products of the other manufacturers and providers identified above. The information about non-Zefon products was gathered from published price lists, websites and catalogs of other manufacturers and providers, which information may change from time to time. Any Trademarks listed are owned by their respective owner. No ownership is implied. Please note packaging quantities between manufacturers may vary.

Zefon offers a complete line of preloaded air sampling filter cassettes manufactured to meet all applicable NIOSH, OSHA, and EPA standards. All cassette housings are manufactured in-house from polystyrene, polypropylene, or conductive materials and are available in two, three, or four piece configurations. Cassettes are individually assembled and preloaded under stringent quality assurance standards with only the finest quality membrane and support pads.

Features:

  • Fully assembled, preloaded and ready to use
  • Leak free construction eliminates sample loss
  • Configurations available to conform with most NIOSH, OSHA or EPA standards that require filter cassettes
  • Wide selection of filter membrane types including MCE, PVC, PTFE, Glass Fiber and Polycarbonate
  • Available with Zefon Solu-Sert™ or Gravi-Sert™ filter capsules installed
  • Housings available in 2-Piece close closed face sampling, or 3-Piece and 4-Piece (37mm only) configurations for open faced sampling.
  • Sterile models available and suitable for a wide range of applications such as fungi collection, microbiological analysis, water supply testing and beverage monitoring.
  • Ultra Pure PTFE models available for pharmacetical compound sampling.
  • Custom configurations available. Contact Zefon sales for more information

Products specifications
BAND Blue Band w/Security
FILTER MATERIAL MCE
FILTER PORE SIZE 0.8 micron
PAD MATERIAL Cellulose
FILTER DIAMETER 37mm
GRAVIMETRIC Match Weighed
HOUSING MATERIAL Styrene - Clear
HOUSING STYLE 3-Piece
Products specifications
BAND Blue Band w/Security
FILTER MATERIAL MCE
FILTER PORE SIZE 0.8 micron
PAD MATERIAL Cellulose
FILTER DIAMETER 37mm
GRAVIMETRIC Match Weighed
HOUSING MATERIAL Styrene - Clear
HOUSING STYLE 3-Piece