Chloromethyl-methylisothiazolone (CMIT/MIT) is a broad spectrum biocide which has been used successfully for microbial control and preventing biofouling in industrial water treatment. This paper presents a review of the various reports over the past 20 years on the efficacy of CMIT/MIT biocide versus Legionella bacteria and the protozoa associated with their growth. These studies included a wide range of conditions, including single organisms in cooling water and complex model systems with bacteria, biofilms, and protozoa. Overall, low levels of CMIT/MIT (1-10 ppm active) provided significant reduction in viable counts of various strains and species of Legionella bacteria in planktonic and biofilm studies and also against the amoebae and ciliated protozoa associated with their growth.

Subject
Water, Bacterial growth, Isothiazolone, Legionella, Biofilms, Efficacy, Bacteria, Biocides, Cooling water, Potable water, Risk reduction, Cooling towers, Water treatment facilities
Keywords:
Isothiazolone, biocide, Legionella, protozoa
© 2007 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2007
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.