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Follow on Google News | Cherwell Range Supports Users of VHP SterilisationCherwell Laboratories’ ‘one-stop-shop’ helps validate hydrogen peroxide vapour sterilisation
By: Cherwell Laboratories Cherwell Laboratories has been supplying active air samplers and Redipor® culture media, gamma irradiated settle plates and contact plates, for environmental monitoring for over 20 years. In response to increasing use of VHP decontamination methods, this equipment has been successfully adapted to be used with hydrogen peroxide vapour systems. The SAS air sampler range includes models that can remain permanently in the isolator and be sanitised in place with hydrogen peroxide. Barrier Pack, gas impermeable packaging for the Redipor® range of prepared microbiological media, enables agar plates to be presented in packs where the inner layer is impermeable to the vapour therefore protecting the agar medium during gassing. A range of spore suspensions and specialist biological indicators developed by Apex Laboratories for monitoring vaporised hydrogen peroxide sterilisation are also available from Cherwell. As VHP sterilisation at ambient pressure works on surfaces but does not penetrate well, validation of the process presents unique challenges. The biological indicators used to validate hydrogen peroxide sterilisation must therefore present a sufficient population, greater than 1 x 106, as a monolayer on a clean, smooth stainless steel surface. Apex biological indicators have been developed so the envelope in which they are presented protects the biological indicator, whilst allowing the hydrogen peroxide to penetrate. Cherwell Laboratories, in conjunction with their specialist suppliers, also offers customers application advice and technical support on the validation of VHP sterilisation. VHP has not been used as extensively as steam, dry heat or EtO (ethylene oxide) sterilisation and there is no standard set of conditions for its use. “We pride ourselves on our access to a wealth of expertise in VHP monitoring which can be passed on to our customers in order to optimise their sterilisation and decontamination processes,” said Andrew Barrow, Sales Manager at Cherwell Laboratories. “A good example of this is a recent newsletter from Mesa Labs, our supplier for biological indicators, which presents some interesting results on the response of biological indicators to hydrogen peroxide vapour.” For more information about how to monitor and validate your VHP sterilisation process, please visit: http://www.cherwell- End
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