Legionella Test Kit


An immediate, simple, on-site Legionella test that makes water systems safer.

Get accurate results in 25 minutes.

The Hydrosense Legionella test kits have been reorganized into the Ultra testing range and the Multi testing range. The Hydrosense Ultra testing range has sensitivity ranges from 100CFU/L for water tests and 200CFU/per swabbed area for swab tests. The Hydrosense Multi testing range has sensitivity for specific action levels of 1,000CFU/L and 10,000CFU/L with the use of our Hydrosense visual scorecard. 



The world’s fastest Legionella test.

Get results on-site in 25 minutes.


The world’s only genuine field test. Removes the risks associated with transportation of samples.


Simple to use, no specialist training required. One line means that the water system is clean and two lines mean that Legionella has been detected. Optionally, the app reader can verify test results independently.


More accurate than a lab test for detecting the strain of Legionella that causes practically all Legionnaires’ Disease cases and outbreaks.


Results can be stored and managed in the Hydrosense portal in real-time providing an independent audit trail.




Legionella is a dangerous waterborne bacteria causing for Legionnaire’s disease. It thrives in warm water and can be contained in water present in a number of industries. In workplaces, common sources can include industrial cooling water systems, central air conditioning systems, domestic hot water systems, fountains, swimming pools, spas and other sources that use the public water supply. Water temperatures in the range of 20°C to 50°C favour the growth of the organism.

The types of business that can be affected are:

  • Hotels and restaurants
  • Commercial buildings
  • Industrial companies (cooling towers and air-conditioning)
  • Shipping
  • Schools
  • Sports halls, swimming and leisure pools, spas and saunas
  • Dental practices
  • Hospitals and care homes

Infection risks are endemic in systems previously not  considered as posing high risks (e.g. domestic hot and cold systems,  air-handling units, storage tanks, showers, water features, spa baths,  bottle washers, sprinklers etc.) has become far more evident and  therefore justifies the need for additional scrutiny and management of  these systems.

Reduce the risk of contamination with regular  examination of your water quality.

Legionella falls under the auspices of the Occupational Health and Safety (OHS)Act, No. 85 of 1993. Legionnaires Disease is recognized as a Notifiable Disease†within South Africa, this in turn requires a medical practitioner or  individual that positively identifies a case of Legionnaires Disease  being forced to notify / report the case to the appropriate  local authority. SABS guidlines, the South African National Standard for Legionella Control was published on the 13th May 2013.


 Two major standards apply for the suggested frequency of testing:
South African National Standards 241 (Drinking water)

Population served


 More than 100 000

 10 every month per 100 000

 25 001 to 100 000

 10 every month

 10 001 to 25 000

 3 every month

 2 500 to 10 000

 2 every month

 Less than 2 500

 1 every month

 The South African code of practice for Legionella testing (document TT174/02 of the WRC)



 Cooling towers


 Community buildings


 Frail Care facilities and hospitals

 Every two months

Legionella dipslides

DipSlide PCA/Legionella, supplied as a 20 test pack

PCA = plate count agar.

The Legionella dipslide is a contact agar, ready-made media with a storage temp. +4 to +15 °C for total germ count and for detection of legionellas in solution or on surfaces.

Side 1 (PCA): Plate Count Agar for total germ count.

Side 2 (Legionella): Legionella Agar for selective detection of legionells.


ROTI®DipSlide PCA/Legionella is suitable for supervision of units for heating of drinking water (Drinking Water Regulations), for surveillance of ventilation and air conditioning (VDI Guideline 6022), as well as for monitoring of the microbiological status of evaporative cooling systems (VDI Guideline 2047).

An incubator is needed for proper temperature and timing of the colony growth on the agar plates.