Dear Loxy,
The answers you will get, will vary from country to country but basically you can say that the best procedure is to follow the European standard. Many of the European countries are still looking at their "old" national regulations before they decide to look at the European wide valid regulations. My hope is that some day there will be one European regulation and the people, involved with sterilisation, will now the national regulations from history books only. I suggest if you carefully study the EN 285 you will find all the answers. However in short the answer to you question is that a sufficient air removal, before the actual sterilisation phase starts, is necessary to achieve a temperature distribution within the steriliser. (including load) This is mayor important if you want to validate your steriliser according to the EN 554. There are, of course, many different ways to achieve this, but the most optimal way is to have vacuum facilities in your steriliser. If I look at the Dutch market I think the sterilisers equipped with a vacuum system will be very close to 100% for all applications.
I trust my answer is satisfactory to you but if you have any questions, please do not hesitate to contact me by the EFHSS site or directly,
Best Regards,
Henk Ras.
SANAMIJ B.V - Rotterdam, The Netherlands.
www.sanamij.com
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