Dip Slides - Monitoring Cooling Towers for Bacteria & Microbial Activity

Dip slides are identified in the UK’s Health and Safety Executives Approved Code of Practice ACOP L8 "Legionnaires' disease: Control of legionella bacteria in water systems" which recommends the use of dip slides for monitoring bacteria and microbial of activity in wet cooling systems including cooling towers.

Frequency of Testing Cooling Towers for Microbial Activity

The Health and Safety Executives ACOP L8 recommends that microbial tests on cooling towers using dip slides should be performed on a weekly basis.

Testing at monthly or longer intervals is not sufficient to identify rapid changes in microbial growth that can occur, particularly during the late spring to early autumn period, when temperature conditions are most favourable to the growth of legionella bacteria.

Expert Legionella Assistance

For further information and expert assistance regarding cooling tower legionella risk management and compliance issues please call +44 (0) 161 877 0586 to speak to one of our specialist advisors or email your questions to This email address is being protected from spambots. You need JavaScript enabled to view it..

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Legionella Control International
Warren Bruce Court
Warren Bruce Road
Manchester M17 1LB
United Kingdom

Manchester: +44 (0) 161 877 05 86
London: +44 (0) 203 637 47 48
Email: info@legionellacontrol.com

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