Benefits of the Mattson Garvin Air Samplers
The Mattson Garvin is a slit to agar air sampler, a high quality unit from the United States. The design philosophy of the Mattson Garvin Slit to Agar Sampler is based upon drawing air through a 0.152 mm slit at 28.3 litres /minute and impinging the particles contained therein upon an agar surface 2.5 mm below the slit.
The agar is contained in a 140 mm culture plate which is rotated by a synchronous drive motor. The rate of rotation can be varied by the interchangeable drive motors specified at the time of ordering. After sampling, the plate is incubated and the colonies counted. This count reflects the number of airborne particles carrying viable organisms. No dilution or plating steps are required. Results are expressed as viable particles per unit of air and a time-concentration relationship may be determined if required to identify events which may have increased the bio-burden.
The Mattson Garvin is also very efficient, because of the velocity of the air through the slit the Mattson Garvin Sampler can sample down to particle size well below 1µm. The ISO 14698:1 standard describes the principles and methodology to assess and control bio-contamination; it states “impaction velocity of air hitting culture media should be high enough to sample down to 1µm”. The Mattson Garvin Air Samplers more than achieve this requirement.
Benefits of the Mattson Garvin Air Samplers
- Tried and tested technology
- Recognised technology in the pharmaceutical industry
- An effective method of capture with a proven rate of recovery
- A bio burden time-concentration relationship can be determined
- 140 mm plate surface area allowing for accurate and reliable results
- Reduced risk of double impingement
- Hepa filtered exhaust
The Mattson Garvin comes in two versions, one environmental sampler that has a vacuum pump to draw in air and sample environmental areas such as clean rooms etc. The other is a compressed gas sampler, allowing the sampling of compressed air lines. This has a regulator to bring the pressure down to enable sampling. Max pressure is 125psi.
| |
