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Culture media assure adequate disinfection

Media specialist Lab M (Bury, UK), provides an extensive range of neutralising media for use in both monitoring the effectiveness of a CIP sanitisation programme, and determining the bactericidal activity of disinfectants.

Media specialist, Lab M (Bury, UK) provides an extensive range of neutralising media for use in both monitoring the effectiveness of a CIP sanitisation programme, and determining the bactericidal activity of disinfectants. Letheen media are formulated to neutralise all commonly used antiseptics and disinfectants – quaternary ammonium compounds, phenols, hexachlorophene, formalin and ethanol. Culturing from routine hygiene swabs taken from surfaces and processing or packaging machinery offers a straightforward assessment of the effectiveness of the sanitisation – and prevents the risk of disinfectant carry-over from the hygiene swab affecting the results. Lab M Letheen Agar and Broth (LAB185/LAB184) are supplied in dehydrated form. Reconstitution and preparation is uncomplicated, resulting in a straw coloured medium with a clear appearance that aids visual inspection. In addition, for manufacturers preparing the antiseptics and disinfectants used in the food industry, Lab M’s Dey & Engley Neutralising Agar, Broth and Broth Base (LAB188/LAB187/LAB186) provide a comprehensive solution for the determination of bactericidal activity and setting target concentrations for these compounds. By completely neutralising a broad spectrum of antimicrobial chemicals, Lab M’s media avoid false negatives arising from disinfectant carry-over. Consequently, Lab M media delivers more reliable results than traditional alternatives such as thiosulphate-based Ringer’s media.

Article first published : 19/7/2006