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Technical features
Model
Cat. No.
Airflow
Use with
Portable
Battery
Battery life
Intended use
Principle
The Surface Air System (SAS) encompasses several models which use the same principle. Air is aspirated at a fixed
speed for variable time through a head which has been machined with a series of specially designed small holes.
The resulting
laminar airflow is directed onto the agar surface of a "RODAC plate" (or Petri dish) containing
medium for microbiological analysis.
When the selected sampling cycle is completed, the plate is removed and incubated. The organisms are then visible
to the naked eye and can be counted for the assessment of contamination levels.
The basic idea
The key features of the Surface Air System (SAS) are:
1. To use a simple and inexpensive "contact plate" ("SURFAIR PLATE", "RODAC") for surface, hand or air
control. These plates are very well known and easily available. They can be purchased ready poured with
different media.
2. To sample a known volume of air for a variable time to provide a range of sampling volumes.
3. To aspirate air in a laminar flow pattern with sufficient velocity to impact organisms onto an agar surface.
4. To accumulate data on the level of hygiene in each environment so that fluctuations can be monitored.
5. To take advantage of advanced electronics for more reliable results in different operating conditions.
6. To have the flexibility to choose between 55 mm contact plates or 90 mm standard Petri dishes.
SAS IAQ Contact
710-0868
100 l/min
55 mm contact plates
Yes
Rechargeable
70 000 l
6
SAS IAQ Petri
710-0919
100 l/min
90 mm Petri dishes
Yes
Rechargeable
70 000 l
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