Parx technology effective against Legionella

Legionella is a gram-negative bacteria that can cause legionellosis. The disease can occur when people breathe in the bacteria, for example in a shower or through a sprinkler system.

Legionella is normally present in soil and fresh water (in low numbers) and is not bound to geographic sites but are spread all over the world. Legionella appears to increase significantly in certain favourable conditions. Optimum growing conditions are stagnant water with a temperature between 25 and 60°C (optimum is 37°C) and the presence of biofilm or other organic material. Such conditions often appear in man-made hot water systems such as drinking water pipes, swimming pools, hottubs, fountains, air coolers and hemp-fitted pipes. If the water can not flow through the entire water system, it is possible that the water will dwell for a long time in 'dead' corners. The bacterium thus has the opportunity to multiply in slime layers (biofilm) on the inside of pipes or in the sediment at the bottom of pipes and reservoirs. 

A recent test shows that the biocompatible technology developed by Parx Plastics has a significant impact on the growth of Legionella bacteria. Legionella tests are quite difficult to perform in labortory evironment as the bacteria need the above mentioned specific conditions to proliferate. However, the laboratory tests performed on request of Parx Plastics show a significant antimicrobial performance on the plastic surface against this strain of bacteria.

Parx Plastics is pleased to add Legionella to the list of bacteria against which the technology has a proven effectiveness and endorses the "broad spectrum" efficacy claim for the technology. The Parx technology effectiveness has been proven to date, by means of ISO 22196 tests by independent accredited laboratories, for:

  • Staphylococcus Aureus (gram+)
  • Escherichia Coli (E. Coli) (gram-)
  • Methicillin-Resistant Staph. Aureus (MRSA)
  • Acinetobacter Baumannii
  • Pseudomonas Aeruginosa 
  • Enterobacter Cloacae 
  • Clostridium Difficile
  • Candida Albicans
  • Salmonella
  • Listeria
  • Staphylococcus epidermidis
  • Listeria

One of the key-features of the technology is the fact that the technology does not migrate. This means no substances is leaching away from the plastic to affect the bacteria. The antimicrobial performance is merely due to the changed mechanical/physical properties of the plastic and its surface. This means that the technology is not leaching out and does not end up in the water and is not becoming a component of the water, making the technology very suitable for tubing and waterpipes, waterlines and drains.