Alternative test methods for washer disinfectors

As David Woods, operations manager for T.E.S.T. asserts, each type of machine will require different quarterly, annual and weekly tests - and it can be difficult to keep up with guidance which is being constantly updated. 

Tests can be critical in detecting failures of the process and help the user detect things that can’t be seen by eye; proteins, bacteria and residual process chemicals. For any given test requirement there may be several methods for the user to choose between and without having knowledge of the science involved or consulting an AE(D) it can be easy to make the wrong choice. Off-the-shelf test kits are promising faster and easier results and it can be tempting to move away from the more traditional testing methods that can be carried out in-house, especially when cost is a determining factor.

Most of the time these advances are positive and can save vital time and money for the Trust, but how would a user know they are getting the same quality of test? This is a key consideration as any contamination, be it protein or microbial, needs be flagged up accurately and in a way that is compliant with the guidance. Historically there have been several examples where a method of testing has become popular ‘in the field’ due to ease or cost only to found ineffective when guidance changes.