impactair-high-performance-microbial-air-samplers

IMPACTAIR HIGH PERFORMANCE MICROBIAL AIR MONITORS

Adaptable, specialised air samplers for highly regulated industries

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.

Let's discuss your requirements

IMPACTAIR RANGE OF HIGH PERFORMANCE AIR MONITORS

Contact us for advice on the best model for you, or to place your order

CHERWELL SUPPLIES PRODUCTS AND SERVICES TO THE PHARMACEUTICAL AND RELATED INDUSTRIES

A few societies and associations we are members and sponsors of

FREQUENTLY

Asked Questions

How much air should we sample?

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.

Should I use contact plates or Petri dishes for environmental air monitoring?

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.

Can I autoclave my SAS sampler?

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.

How frequently should my SAS air sampler be calibrated?

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.

Why might I want gamma irradiated media?

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.

What is the maximum exposure time for settle plates?

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.

Is it OK to store prepared media in the fridge?

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.

What is the difference between general purpose and selective growth media?

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.

CHERWELL IS DIFFERENT

Supplying products is only the start

cherwell-icon-17

The best products prepared for you

Our Redipor® media products are batch tested, QC certified and delivered when you need them

cubes

Bespoke accessories and services

We provide additional equipment or services to make your environmental monitoring more effective

cherwell-icon-35

Best customer service

We build long-standing client relationships on understanding, commitment and trust

MicrosoftTeams-image (30)

Air Samplers for Environmental Monitoring

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.

More About Air Samplers