The Principles of Medical Device Decontamination

◊ Ensure water collection – storage and delivery are to the requirements of the guidance and that of the testing laboratory being used.

l

Note: If in doubt, check the logistics chain from the

moment the sample is taken to the time it arrives at

the laboratory. Is it sat waiting at the post room or for

a taxi? Is it still within temperature when reaching the

laboratory?

◊ In order to investigate high or unusual microbiological results additional water samples may have to be taken to identify the potential source of the contamination: * Take the additional samples from earlier in the distribution system. * Sample any treatment plant before and after major treatment points such as membranes, filters, softeners etc. * Sample the quality of the tank or mains supply water. Remember that if using RO plant, it is a percentage reduction method not an absolute barrier to contamination. It cannot deal with levels of contamination in the supply water that are higher than its design criteria.

l The water test points must be managed correctly and cleaned/ disinfected prior to use.

Note: Sanitary, stainless-steel types can help prevent

inadvertent contamination of samples

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