Biological Dip Slides

Biological dip slides are used to facilitate the on-going monitoring of input and output water quality. Red dots on the slide indicate microbial contamination of water – instructions and analysis guide supplied with pack.

Pack Size
10 dip slides.

  • Easy to use
  • Test input and output water quality
  • Use to assess where contamination is most prominent in the water lines

Where monitoring is undertaken, the TVC should be expected to lie in the range 100 to 200 colony forming units per millilitre (cfu/ml).

In general, incubation should be at 22˚C. These measurements can be carried out by commercial microbiological services or by Public Health England. (Some commercial water-purification services offer microbiological control such that TVC values may be maintained below 10 cfu/ml.)

Where visual contamination is present, flushing with a suitable disinfectant followed by thorough washing is necessary.

Disinfection of DUWLs should be carried out periodically. In all cases, the manufacturer’s instructions should be consulted.

Sodium hypochlorite and isopropanol and a number of other agents have been shown to be effective in the removal of biofilm as well as the reduction of microbacterial contamination. However, these agents should only be used where recommended by manufacturers. If they are used, care should be taken to ensure that DUWLs are thoroughly flushed after disinfection and before being returned to clinical use.