Filter, Gelatin, w/o Support Pad, 25mm, 50Pk
Part Number:
225-9551
Overview
Presterilized gelatin (water soluble) filter, 25-mm, no support pad included, recommended for use with Button Sampler.
Pre-sterilized, high-moisture Gelatin Filters help to maintain microorganism viability for sampling periods up to 30 minutes. Gelatin Filters dissolve easily when placed on agar and can be used to monitor in areas where disinfectants or antibiotics are present.
| Material | Gelatin |
|---|---|
| Diameter | 25-mm |
| Autoclavable | No |
| Special Features | Filters only; pre-sterilized by gamma irradiation |
Performance Profile
| 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 that 3 µm. |
| Diameter | 25 mm or 37 mm |
| Thickness | Approximately 250 µm |
| Sterilization | Presterilized by gamma radiation. Filters individually wrapped and packaged in units of five each in a polyethylene bag |
| Thermal Resistance | Maximum 140 F (60 C) |
| Residual Dampness Content | 46 to 49% |
| Conditions for Use | Maximum room temperature is 86 F (30 C); 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 39.2 and 46.4 F (4 and 8 C) is recommended. Caution: Do not store gelatin filters below 39.2 F (4 C). 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. |
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