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92 - The considerations in selecting an aspirating head for active air samplers
THIS NOTE SHOULD HELP THE USER IN THE SELECTION OF THE ASPIRATING HEAD FOR ACTIVE AIR SAMPLERS. Aspirating head material, advantages, disadvantages
Learn more88 - Useful information about Pharmaceutical Environmental Microbiology
Most companies have chosen a harmonized approach using the recommendations from the EU and the FDA, to include applying the most stringent criteria where applicable, although some companies stated that they use the most stringent criteria across the board. However, the regulators prefer to see Alert and Action Levels based on historical data once the EM program has been established for a minimum of 12 months.
Learn more82 - Sampling viable organisms by microbial active air samplers
IMPORTANCE OF THE IMPACTION ON AGAR SURFACE. Effect of jet velocity, nozzle size, nozzle distance from the agar surface, quality of medium, volume of medium inside the culture, expiration date of the plate, moisture content and sterility of the medium, temperature should be considered to obtain the optimization of these variables. These facts are determinative to obtain an efficient design of a microbial air sampler. ISO-14698 standard mentions that impaction velocity should be less than 20 metres per second.
Learn more81 - The Bluetooth applications to transfer data from the TRIO.BAS microbiological air sampler
THE BLUETOOTH APPLICATIONS TO TRANSFER DATA FROM THE TRIO.BAS MICROBIOLOGICAL AIR SAMPLER. The Bluetooth applications is an ideal electronic device to transfer the environmental data collected by the TRIO.BAS air samplers.
Learn more75 - Sequential sampling
SEQUENTIAL SAMPLING WITH TRIO.BAS DUO AND TRIO IN CLEAN ROOM, ISOLATORS, RABS With TRIO.BAS DUO microbial air sampler (with 2 separated aspirating chambers) and TRIO.BAS TRIO microbial air sampler (with 3 separated aspirating chambers) it is possible to monitor two or three different environments or spots of the same environment, simultaneously.
Learn more72 - The choise and use of an active Microbial Air Sampler
THE CHOISE AND USE OF AN ACTIVE MICROBIAL AIR SAMPLER The microbial air sampler must be carefully chosen because the characteristics of the instrument may impact heavily on usability, on implementing deadlines and consequently the final cost of such activities in terms of buying and managing the facility, man hours and efficiency of operations The air sampler should be easily cleaned and sanitized and be constructed of materials compatible with the most common detergents and biocides such as isopropyl alcohol, hydrogen peroxide and sodium hypochlorite.
Learn more70 - Test of spontaneous generation
The history For many centuries many people believed in the concept of spontaneous generation, the creation of life from organic matter. Spontaneous generation is the hypothesis that some vital force contained in or given to organic matter can create living organisms from inanimate objects. Spontaneous generation was a widely held belief throughout the middle ages and into the latter half of the 19th century. The Italian Francesco Redi disproved spontaneous generation for large organisms by showing that maggots arose from meat only when ies laid eggs in the meat.
Learn more69 - TRIO.BAS Air Sampler Biological ef ciency test according ISO 14698-1
CMA – CENTRO DI MICROBIOLOGIA APPLICATA Via Cusago 154 20019 Settimo Milanese Laboratorio accreditato ACCREDIA n. 1087 Direttrice Dr Miriam Magrì. Biological efficiency testing of several active microbiological air samplers according ISO14698-1 in a dedicated microbial wind tunnel.
Learn more68 - The ideal m/s speed of the impact air on agar surface of active air sampler
The ideal m/s speed of the impact air on agar surface of active air sampler. The indications of the ISO 14698 about the ideal m/s speed of the air that impacts on the agar surface of an active microbial air sampler are quite general. Flow rate: sufficiently high to ensure the detection of low levels of contamination but weak enough to not dehydrate excessively agar medium; Flow velocity and impact: sufficiently high to be sampled microorganisms of size less than 1 micron and sufficiently weak to avoid damage during the impact.
Learn more59 - Hole impact distribution
Even distribution of air flow on the agar of Petri and Contact dish. The purpose of the test was to verify the regular distribution of the air flow on the surface of agar of a 90 mm Petri dish. The evaluation is performed counting the number of the impact holes produced on the gar surface, after aspiration. AIR SAMPLER TRIO.BAS MINI (100 litres/minute) with s/s aspirating head (Petri dish containing SDA medium)
Learn more56 - Microbial Air Sampler with different air flow rate performances comparison
This paper refers to the performances of different microbial active air samplers with different aspiration air flow rate (100, 180 and 200 litres of aspiration air per minute). The purpose is to evaluate the possible different microorganisms collection efficiency.
Learn more54 - Application of MPN in microbial air environmental tests
When the air is aspirated through the aspirating head of the air samplers indicated in the USP 1116 (Slit to agar samplers, Sieve impactors, Centrifugal samplers, Surface Air System) and micro-organisms impact upon the agar surface there is a statistical probability that the micro-organisms may land on top of each other and be visually interpreted as one single colony (CFU).
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