The ImpactAir® range of microbial air monitors are designed to meet the demanding requirements of the pharmaceutical, healthcare and specialist food industries.
They are used for continuous monitoring in high-grade areas, where in-process monitoring of viable particles can be critical and where ISO-14698, BS EN 17141 and GMP Annex 1 compliance must be satisfied.
Thanks to its innovative modular design, the ImpactAir-90 and ISO-90 ranges can be adapted into a range of formats to suit specific deployment needs, and are controlled via touch screen LCD.
With 28.3 litres of air flow per minute, the unit can be set to sample air for any time from 1 minute to 9 hours.
Plate height adjustment is fully automatic and there are a number of accessories available including trolleys, inlets, isokinetic probes, exhaust ducts, aseptic dish handling tools and an agar plate lid holder.
Due to its unique design, ImpactAir does not shed particles so is able to operate in environments alongside particle counting devices without influencing readings.
All models within the ImpactAir range are based on the slit-to agar method, which has very low d50 values of around 0.5µ. This provides exceptional biological collection efficiency and the ability to easily determine viable microbial events in relation to time.
The heart of the ImpactAir-90 and ISO-90 range of microbial air monitors
The ISO-90 monitoring head, which utilises the high efficiency slit-to-agar method, contains all the controls and mechanisms required to rotate the agar plate during the monitoring period.
A complete turnkey monitoring solution for isolators
A powerful built-in vacuum pump ensures smooth running of the ISO-90 head at distances of up to 10+ metres away making it possible to locate the ISO-CON away from the head in a more convenient location.
The first battery powered Annex 1 compliant monitor
Using the ISO-90 head mounted directly onto a reduced size ISO-CON and introducing low power electronics has made it possible to produce the first battery powered Annex 1 compliant monitor
The High Flow option includes our most powerful pump
Ideal for existing ImpactAir-140 users who wish to move to a 9cm device and still maintain the previous flow parameters.
Or for those wishing to sample the air in a much shorter time period or where large volume air samples are required.
Use an existing vacuum source
Designed specifically for isolator manufacturers who wish to perform their own flow control using their own vacuum source.
With Built-In Pump
We have reduced the size and power consumption of the vacuum pump so the pump can fit into the monitoring head and does not require any external vacuum source or pipework. This makes it ideal for bio-safety cabinets or isolators.
Typical requirements suggest 1,000 litres per air sample in high risk areas, such as: grade A filling lines, grade B clean rooms, operating theatres etc. As the criticality of the area reduces, the sample size can be reduced. The aim is to achieve a representative sample; so where higher counts would be expected, a smaller sample produces a more realistic number of cfu to count.
SAS samplers were originally designed for Contact plates, however, a Petri dish option has been available for a number of years. It is really a personal choice, although this should be decided at time of purchase, as the sampler will be specifically configured for the plate type chosen. There are advantages for each version and we would be happy to discuss your specific needs.
No, do not put your SAS sampler in a steam autoclave. The only part that can be autoclaved is the drilled head. The unit can be wiped with alcohol wipes to decontaminate it. The only other exception is the SAS Pinocchio, parts of which can be autoclaved.
Cherwell Laboratories recommends every 12 months and we will send a reminder for the month it is due. For some situations local procedures demand more frequent recalibrations so Cherwell is happy to offer tailored recalibration date labelling and reminders on request.
The sterility of the packaged medium is assured and all but the outer layer of packaging is also sterile. Thus the risk to the environment to be sampled is greatly reduced. There is an additional benefit that the additional packaging and process extends the room temperature shelf life. This can be sufficient reason for small or irregular users to prefer irradiated.
Settle plates are used to monitor the level of viable particles in the environment through a process of passive air sampling. A viable particle settles on agar plates at a rate dependent on its characteristics and the airflow in the environment.
EU GMP Guide Annex 1 has recommended that 90mm settle plates can be exposed in cleanroom environments for up to 4 hours. However, agar plates may dry out during long exposures where the rate of air exchange is high. So, it might be necessary to use deep filled settle plates, or replace the settle plate after a shorter time to ensure satisfactory growth promotion after exposure.
The storage condition for the majority of our prepared media is Ambient not exceeding 25ºC, the exception being a couple of very specialist products.
We have never specified storage in a fridge for our general media as this causes excessive condensation and can result in a very wet agar surface. This makes the product impossible to use.
General purpose media have nutrients that support the growth of most non fastidious culturable microorganisms. Selective growth media contain components that will inhibit the growth of some types of microorganisms, while supporting the growth of others.
General purpose media, such as Tryptone Soya Agar, are used to produce total counts. While selective media, such as XLD for Salmonella species, are used to test presence/absence of specific types of microorganism.
Do you have the right air sampler for your needs?
Choosing the best air sampler means that compliance, efficiency and consistency are met with confidence.
Learn more about types of air samplers and how each works. Download technical datasheets for each model and brochures to help you make a selection.