Huwa-San: The Multi Purpose Disinfectant

People often ask me what I do and the reply that I usually give is that I sell Huwa-San disinfectant for legionella control as it is a safer and better alternative to chlorine. However this is very much an over simplification. Huwa-San, silver stabilised hydrogen peroxide is a great weapon to control legionella bacteria in water systems but it is so much more. It is also a extremely effective biocide for surface and air disinfection.

Huwa-San, manufactured by Roam Technology is a broad spectrum biocide which has shown to be highly efficient bactericide, virucide, fungicide, algaecide and sporicide. It is odourless, colourless and tasteless and breaks down into oxygen and water. It is completely chlorine and alcohol free.

Huwa-San: The Water Disinfectant

Huwa-San can be used to shock dose water systems either during routine disinfection or when microbiological issues have been identified in the water system. In both these cases Huwa-San is a much more effective disinfectant than chlorine as it will remove biofilm in the water system and its break down products are oxygen and water. This makes it much more environmentally friendly than chlorine which can form over 600 by-products many of which are carcinogens.

Routine Disinfection

In the case where tank fed, water systems are routinely disinfected and there are no legionella control issues then Huwa-San dosage can be applied at 100ppm peroxide with a contact time of 24 hours. This will maintain system cleanliness.

Disinfection where Legionella or Pseudomonas Bacteria has been identified.

However when a microbiological issue has been identified with the system then a higher dose rate of Huwa-San would be advised. In this case the Huwa-San dosage would be applied at 1000ppm peroxide with a contact time of 1 hour. This will remove biofilm containing both Legionella and Pseudomonas.

Man fogging gym

Huwa-San: The Air Disinfectant


During the past 18 months of the Covid-19 pandemic Huwa-San has been used to disinfect spaces to ensure cleanliness. It has been used to prevent Covid-19 spreading in areas of high use,  for example, staff food canteens where workers could not work from home.  Regular weekly fogging kept virus levels to a minimum and helped to prevent staff members getting sick. Fogging has also been used to prevent Covid-19 spreading where a positive case of Covid has been identified. It has been used many times in offices, gyms and sports clubs where team members have tested positive. The fogging of these spaces with Huwa-San has killed any viruses present and has allowed other staff members to return safely to work.


In addition to Covid-19 Huwa-San will control other bacteria, viruses and mould. It has been used successfully to fog a hotel in Gourock, Scotland where a number of the visitors and staff had the sickness bug Norovirus. After fogging with the Huwa-San samples were taken by the environmental health  and were found to be negative of Norovirus.

Norovirus: How it spreads.

Norovirus, commonly known as the winter vomiting bug, is the most common cause of viral gastroenteritis in the UK. It is a virus that can be transmitted by faecal contamination of air and water, person to person contact, or aerosolization of the virus and subsequent contamination of surfaces. It is extremely contagious and there is no cure.

The disease usually occurs where there are a large number of people living in close proximity to each other in for example in Nursing Homes, Hotels and Ships.

Norovirus: The Symptoms

Norovirus can be extremely unpleasant with symptoms of diarrhoea, vomiting and stomach cramps. It can also cause the patient to become weak and fatigued. The virus is self-limiting and most people recover from the virus within a few days however the elderly and the immune – suppressed can become more seriously ill. It is important that patients remain hydrated while they are suffering.

Whilst there is no cure for the Norovirus it can be prevented and killed by good hygiene practices. Huwa-San has been proven to kill Norovirus. In Scientific tests carried out by Caledonian University in Scotland this market leading silver stabilised hydrogen peroxide was proven to kill calicivirus (surrogate human norovirus) at low concentrations and short contact times.

In the hotel in Gourock 41 cases of Norovirus were detected however after limiting the movement of infected people, increasing cleaning in public areas and fogging the rooms with Huwa-San the outbreak was swiftly brought under control.

Huwa-San: The AFNOR test

There is also independent, scientific proof that Huwa-San is effective against viruses, bacteria and mould. Roam Technology have put Huwa-San through the AFNOR NF T72 281 test for fogging.  A 12.5% concentration of Huwa-San has passed the AFNOR test. This is the test that must be passed for fogging in Health premises.

This test ensures that treatment achieves the following log reduction

  • Bacteria  > 5
  • Yeast.  > 4
  • Spores> 3
  • Mycobacterium > 4
  • Viruses > 4
  • Bacteriophage > 4

Huwa-San: The Surface Disinfectant

Huwa-San  is a great surface disinfectant as it kills bacteria, viruses mould, algae. It’s is used industries such as agriculture and the food industry to disinfect things like animal pens and food conveyor belts.

Organic Approval

One of the great things about Huwa-San is that it is a non rinse disinfectant and will not leave any residue.  Therefore it compliant with current organic standards for use as a leave in place disinfectant in organic facilities. It is ideal for cleaning equipment, surfaces, conveyor belts, trays etc and does not require a freshwater rinse prior to the production of organic approved foodstuff.

Huwa-San: The Benefits

Huwa-San as a multipurpose disinfectant has a whole heap of benefits and is simple and easy to apply in a huge amount of challenging situations.

  • Registered under the BPR for product types 2-5 including disinfection of human and animal drinking water
  • It has been independently tested against bacteria, viruses, and mould and algae.
  • It is based on silver stabilised hydrogen peroxide so will not form chlorinated by-products
  • Safe breakdown products of oxygen and water.
  • It will remove biofilm which keeps surfaces cleaner preventing blockages in filters and strainer.
  • Huwa-San is suitable for use in organic facilities
  • There is no chlorine or alcohol in the product
  • Suitable for a wide temperature range between 0-95C
  • Non toxic and pH neutral when dosed.

SafeSol have worked with Huwa-San technology for over 20 years and have more than 75 years experience in water treatment. We are happy to help with any queries and provide technical support .

Call 0191 4478008 or