FAQs

Yes, FreeBact® Surface is developed for the disinfection of all types of surfaces. If there is concern about Hantavirus, it is important to focus on surfaces, spaces, and objects that may have been contaminated by rodents, for example, through droppings, urine, or saliva.

Hantavirus is a group of viruses normally spread from rodents to humans. In Sweden, the known variant is linked to Puumala hantavirus, while the current international outbreak in May 2026 concerns Andes virus, a more severe variant that has received media attention. The Public Health Agency of Sweden is monitoring the development and currently assesses the risk of general transmission as low.

FreeBact® Surface can be used as part of good hygiene and surface disinfection, but should not replace the authorities' recommendations in cases of suspected risk of infection, sanitation, or contact with rodents.

Last updated: May 2026

FreeBact® Surface OnTheGo is intended for all types of surfaces. For a disinfectant product to be marketed for direct use on skin, a special PT1 approval is required. This is something we are working on, but the approval process takes time.

Therefore, we describe the product as a surface disinfectant, even though it is based on chlorine dioxide, a substance also used in drinking water treatment. Chlorine dioxide is approved as a processing chemical for drinking water, according to the Swedish Food Agency, and FreeBact® Water is used to make water safe to drink.

With that background, it is understandable that the question of hands often comes up. If a substance is used to make water safe to drink, it is natural that many also see it as a gentle alternative in other everyday situations. FreeBact® Surface is also up to three times more effective than regular alcohol gel and is effective against naked viruses, such as norovirus, which causes winter vomiting disease.

Until official PT1 approval is in place, we therefore communicate correctly and clearly: FreeBact® Surface is for all types of surfaces.

Last updated: May 2026

It's completely understandable that the distinction might seem a little unclear, as both products can be used for freshwater tanks in RVs.

Both products work to disinfect freshwater tanks, but they differ in handling, shelf life, and which tank size they are best suited for.

Brief difference between the products

FreeBact® Water Extreme is the easiest to use because it is already pre-mixed. This means you don't need to mix two bottles before use. One bottle is sufficient for up to 100 liters of water, and the 2-pack is sufficient for a total of 200 liters.

It is very suitable if you want to disinfect the tank before the start of the season, during the season, or before winter storage. The product helps to keep the tank, hoses, and faucets free from biofilm, bacteria, viruses, and bad odors. It leaves no taste and is approved as a drinking water additive by the Swedish National Food Agency.

The shelf life is at least 2 years in an unopened bottle. The product should be stored in the dark and preferably cool, ideally in a refrigerator, 2–8 °C, to extend its shelf life. It is active as long as the solution is yellow.

FreeBact® Water Tank 50–250 L is a 2-component product. This means that two bottles are mixed before use. It is available for different tank sizes, with 50–250 liters being our smallest Tank variant.

The advantage of the Tank product is that it has a very long shelf life, 8 years, as long as the bottles are unmixed and unopened. It does not need to be refrigerated, but like all products, it should be stored in the dark and protected from direct sunlight.

Which one should you choose?

It primarily depends on the size of your freshwater tank.

If you have a tank of up to 100 liters and want the simplest solution, we recommend FreeBact® Water Extreme.

If you have a larger tank, or want a product with an extra long shelf life that can be stored in the RV, boat, or storage for a long time, we recommend FreeBact® Water Tank 50–250 L.

For a freshwater tank in an RV, both are the right products, but if you tell us approximately how many liters your tank holds, we can recommend exactly which variant is best suited.

Shelf life and storage, unopened bottle:
At least 2 years. Store the product in a dark place and avoid direct sunlight. Preferably store in a cool place, ideally in the refrigerator, 2–8 °C, which extends the shelf life. The product is active as long as the solution is yellow.

Shelf life, opened bottle:
The product is active as long as the solution is yellow, but at least 30 days after opening.

Chlorine dioxide (ClO₂) is a highly effective disinfectant against microorganisms, and it is also more environmentally friendly compared to chlorine. See another question below for a comparison.

NO!
Chlorine dioxide (the active substance in ALL Xinix products):

• Chlorine dioxide (ClO₂) is a compound, meaning a substance formed by combining two or more different elements.
• You are NOT drinking chemicals! (only a small amount of salt)
• Inactivates ALL viruses, bacteria, and fungi (e.g., E. coli, Salmonella, Legionella, SARS-Covid).
• Inactivates all naked viruses.
• Leaves no taste in the water.
• Low toxicity.
• Leaves no harmful chlorinated organic by-products.
• Very effective at different pH levels.
• Causes no harmful organic by-products.
• Low dosage is sufficient.
• Used as a pure component and leaves no cyanuric acid.
• Kills harmful protozoa, such as Cryptosporidium.
• Shelf life: 1-component solution 2 years, 2-component solution 8 years.
  

Chlorine

• Chlorine (Cl₂) is an element, meaning a pure substance consisting of only one type of atom.
• Leaves carcinogenic by-products in the water (trihalomethanes).
• Leaves a strong bad taste – small children may refuse to drink.
• Gives a strong chlorine smell (like in swimming pools).
• Effectiveness is affected by pH levels.
• Causes carcinogenic trihalomethanes (THM).
• Chlorinates organic matter (e.g., meat).
• Requires a relatively high dosage.
• Chlorine-forming tablets accumulate cyanuric acid in the water.
• Some protozoa (Cryptosporidium) are very resistant to chlorine.

Hypochlorous acid and hypochlorite are formed when chlorine is dissolved in water. In alkaline solutions (pH above 7), most of the chlorine is converted to hypochlorous acid or hypochlorite. Hypochlorites are salts of hypochlorous acid. The ratio between the two also depends on the pH value. For example, sodium hypochlorite is often sold in aqueous solution as "bleach" or "household bleach".

Hypochlorous acid (HOCl) is formed from chlorine and water according to the following reaction:

Cl₂ + H₂O → HCl + HOCl

Properties such as side effects, risks, and effectiveness are summarized in our comparison table under the heading "chlorine".

The difference between a compound and an element is like the difference between a recipe and a single ingredient:

1. Element: It is a pure substance consisting of only one type of atom. Think of it as a basic building block. For example, chlorine (Cl) is an element, just like oxygen (O), hydrogen (H), and gold (Au). Each element has its own type of atom and cannot be broken down into anything simpler.
2. Compound: It is a substance formed by combining two or more different elements. It's like mixing ingredients to create a new dish. A compound has different properties than the elements it is composed of. For example, chlorine dioxide (ClO₂) is a compound because it is made of one chlorine atom and two oxygen atoms. When these combine, a new substance is formed with specific properties that differ from just chlorine or oxygen individually.

So, while an element is like a single LEGO brick, a compound is like building something new with several different LEGO bricks together!

Chlorine dioxide is approved within the EU and by the Swedish Food Agency and is recommended by the United States Environmental Protection Agency (USEPA) as a disinfectant additive for drinking water, to replace chlorine (which gives rise to carcinogenic by-products).

We are proud to present this list - as you can see, our products are used in most areas:

BOATS & YACHTS
• Water system cleaning: Disinfection of water tanks and kitchen areas.
• Surface cleaning: Cleaning of decks and prevention of mould and algae growth.
• Disinfection of recreational areas: Disinfection of recreational spaces on board.

CAMPING & HIKING
• Water disinfection: Disinfection of water from natural sources (rivers,
lakes).
• Equipment cleaning: Cleaning of camping equipment, tools and
water containers.
• Safe drinking water: Ensuring safe drinking water during
outdoor activities.
• Outdoor surface cleaning: Cleaning of outdoor surfaces, such as picnic tables.

CATERING & FOOD
• Disinfection of kitchen utensils: Disinfection of kitchen utensils and tools.
• Product cleaning: Cleaning and disinfection of fruit, vegetables, meat and
other raw materials.
• Surface cleaning: Disinfection of food preparation surfaces and storage areas.
• Disinfection of processing equipment: Disinfection of equipment for
meat, seafood, and poultry.

PROPERTY MANAGEMENT
• Disinfection of office equipment: Disinfection of keyboards, desks
and office furniture.
• Surface cleaning: Cleaning of door handles, chairs, and other high-contact surfaces
in offices.
• Sanitisation of common areas: Disinfection of shared equipment and
common areas.
• Cleaning of toilets and elevators: Disinfection of toilets and elevators in
office buildings.

FISH FARMING & AQUACULTURE
• Tank cleaning: Disinfection of fish farming tanks and aquaculture systems.
• Biofilm removal: Removal of biofilm from water pipes and tanks.
• Cleaning of processing facilities: Ensuring clean water in
fish processing plants.

AVIATION
• Water system disinfection: Disinfection of water tanks, pipes, and hoses.
• Interior surface cleaning: Disinfection of surfaces inside aircraft.
• Nozzle cleaning: Disinfection of nozzles in aircraft.
• Air conditioning: Disinfection of air conditioning systems in aircraft.
• Surface cleaning: Disinfection of water tanks, interior surfaces, and other
components in aircraft.

HOME
• Drinking water: Disinfection of drinking water when tap water is not safe.
• Surface cleaning: Cleaning and disinfection of kitchen surfaces, bathrooms, and other
home environments.
• Biofilm removal: Removal of biofilm from water pipes and
storage tanks.
• High-contact areas: Disinfection of high-contact areas, such as
door handles and light switches.

HOTELS
• Cleaning of contact points: Cleaning of door handles and other high-contact surfaces.
• Kitchen cleaning: Disinfection of kitchen equipment, countertops, and utensils.
• Bathroom and shower cleaning: Disinfection of bathrooms and showers.
• Cleaning of public areas: Cleaning of floors and common areas such as the lobby and restaurants.

CARAVANS & MOTORHOMES
• Disinfection of water tanks: Cleaning and disinfection of water tanks.
• Surface cleaning: Cleaning of kitchen and bathroom surfaces.
• Cleaning of compact areas: Disinfection of small spaces and
air conditioning units.

DISASTER & AID ORGANISATIONS
• Water purification in crisis areas: Ensuring clean drinking water in
crisis areas.
• Sanitisation in emergencies: Ensuring sanitation and clean water in
disaster and emergency situations.
• Disinfection of temporary shelters: Cleaning and disinfection of
temporary shelters, aid centres, and common areas.

PUBLIC TRANSPORT
• Disinfection of seats and railings: Disinfection of seats, railings, and other
surfaces.
• Sanitisation of contact points: Cleaning of ticket machines, door handles, and
other high-contact surfaces.
• Cleaning of air conditioning systems: Disinfection of
air conditioning systems in buses, trains, and trams.
• Cleaning of stations and waiting areas: Disinfection of waiting areas and
stations.

MUNICIPAL WATER
• Purification of public water systems: Purification processes for public
water systems.
• Wastewater treatment: Disinfection of sewage systems.
• Biofilm removal: Removal of biofilm from public
water distribution systems.

CRUISE SHIPS & TANKERS
• Onboard water systems: Disinfection of water systems on cruise ships
and tankers.
• Cleaning of common areas: Cleaning of common areas, kitchens,
bathrooms, pools, and spas.
• Air conditioning: Disinfection of air conditioning systems.
• Biofilm removal: Removal of biofilm in onboard water systems.

PHARMACEUTICALS & BIOTECHNOLOGY
• Laboratory disinfection: Disinfection of laboratories and cleanrooms.
• Equipment sterilisation: Sterilisation of
pharmaceutical production equipment.
• Sterile environment: Ensuring sterile environments in
pharmaceutical production facilities.

MILITARY
• Water purification in the field: Ensuring clean drinking water in the field.
• Sanitisation of field hospitals: Disinfection of field hospitals and military equipment.
• Disinfection of military equipment: Disinfection of military transport and
equipment.
• Water purification during deployment: Disinfection of water sources in operational areas.

POOLS & SPAS
• Pool water disinfection: Disinfection of pool water to ensure
safety.
• Biofilm removal: Removal of biofilm from pool walls, pipes, and
shower areas.
• Spa disinfection: Disinfection of spa and sauna areas.
• Maintenance of filtration systems: Prevention of bacterial growth in
pool filtration systems.

RESTAURANTS
• Kitchen cleaning: Cleaning of kitchen counters, floors, and surfaces.
• Disinfection of utensils and equipment: Disinfection of utensils and
kitchen equipment.
• Dining area cleaning: Cleaning of public dining areas, tables, and chairs.
• Refrigerator cleaning: Disinfection of refrigerators and food storage areas.

SCHOOLS & NURSERIES
• Disinfection of toys and surfaces: Disinfection of toys, pacifiers, and child-friendly surfaces.
• Hand and surface cleaning: Disinfection of hands and surfaces in classrooms and play areas.
• Classroom cleaning: Cleaning of classrooms, playrooms, and common areas.
• Bathroom disinfection: Cleaning of bathrooms and shared areas for children.

HOSPITALS
• Disinfection of medical instruments: Disinfection of medical
instruments such as surgical tools.
• Operating room cleaning: Cleaning and disinfection of operating tables and
other surfaces in patient rooms.
• Disinfection of protective equipment: Cleaning of gloves and protective equipment
to eliminate pathogens.
• Surface cleaning: Disinfection of floors, corridors, and other high-contact
surfaces.
• Disinfection of patient rooms: Cleaning of patient rooms, waiting rooms, and common
areas.
• Air conditioning: Disinfection of ventilation and cooling systems to
prevent the spread of airborne diseases.
• Biofilm removal in water systems: Cleaning of water pipes to
eliminate biofilm and prevent bacterial growth.

SPORTS FACILITIES
• Gym equipment cleaning: Disinfection of gym equipment and exercise surfaces.
• Changing room cleaning: Cleaning and disinfection of changing rooms
and showers.
• Disinfection of contact points: Cleaning of benches, mats, weights, and
other frequently touched surfaces.

WATER SYSTEMS
• Disinfection of water tanks: Cleaning and disinfection of water tanks
and reservoirs.
• Cleaning of pipes and hoses: Disinfection of pipes, hoses, and
water storage systems.
• Biofilm removal: Removal of biofilm to ensure safe
water flow.

VETERINARY CLINICS
• Disinfection of animal cages: Disinfection of animal cages and
animal holding areas.
• Sterilisation of veterinary equipment: Sterilisation of veterinary instruments
and equipment.
• Cleaning of clinic surfaces: Cleaning of floors, examination tables, and other surfaces
in clinics.

ADVENTURES & EXPEDITIONS
• Water purification: Ensuring clean drinking water in extreme environments.
• Disinfection of tools and equipment: Disinfection of tools, equipment,
and camping gear.
• Water purification in remote areas: Water purification in remote areas (deserts,
mountains, forests).

Xinix has managed to stabilize a GAS, chlorine dioxide (ClO2), into LIQUID form - something previously considered impossible.

Xinix FreeBact Water & Surface 1-K, our 1-component product, is unique as it has a very long shelf life: 2 years, when stored in a cool and dark place. An opened bottle then lasts for 30 days. Our pre-mixed 1-K product can be used directly.

Xinix FreeBact Water 2-K, our 2-component products, also have an unusually long shelf life: 8 years and should be used within 24 hours of mixing.

ALL. Even with minimal contact time, chlorine dioxide is very effective against pathogenic organisms such as Legionella, Listeria, Salmonella, amoebic cysts, Giardia cysts, E. Coli, and Cryptosporidium. Since chlorine dioxide destroys biofilm, bacterial regrowth is also inhibited.

FreeBact® Water does not affect the smell or taste of the water and is approximately 5 times more effective than chlorine-based products. Our products do not form bound chlorine compounds/trihalomethanes, as chlorine-based products do (these are considered carcinogenic).

XINIX has more than 46 scientific studies and tests from world-leading universities and laboratories such as Clancy, Johns Hopkins, London Medical School, Singapore University, Michigan State University, and others.

6 EN* standards. A safe disinfection method to eliminate spore-forming bacteria.

Ongoing ISO certifications and additional EN tests.

* EN = European standards express requirements for products, processes, or services to meet the suitability for a specific purpose, read more here.

There are products for every need; our smallest bottle is sufficient for 15 litres and our largest for 10 m3 of water. We also have a dosing solution, i.e., continuous dosing into water systems.

If the water tank is sealed with a lid and not opened, the water remains disinfected.

As soon as you open the lid, a new contamination process begins (as contamination is everywhere). The disinfection with our products is instantaneous, meaning there is no long-term effect. How long the water remains drinkable therefore depends on the tank it is stored in and how it is sealed.

It is preferable to disinfect the water only when it is to be used, as it is quick and leaves no taste or smell. Xinix products also do not leave harmful residues, something that chlorine-based products do. The only residue is a barely measurable amount of common salt.

No, Xinix products do NOT remove minerals from the water.

No. Use our products only as instructed on the packaging and for their intended purpose.

In case of ingestion of 1-C product:
There is no danger with overdose. In case of ingestion of a larger volume, drink water and contact a doctor.

In case of ingestion of 2-C product:
Drink water and contact a doctor.

In Sweden, chlorine dioxide is a drinking water additive approved by the Swedish Food Agency.

WHO's page refers to an old 2019 test of a product called AquaCare, manufactured by a former Xinix company that no longer exists. Since then, we have significantly developed and improved our products. We have hired a doctor of chemistry, Dr. Robert Heinrich, who has refined our formula. Our current products – Xinix FreeBact® Water & Surface – are the result of this development and have been tested according to modern standards.

WHO's testing procedure involves storing samples at room temperature for up to six months before testing, which is not optimal for our product. In addition, too low a dosage was used in the 2019 test. We have contacted WHO multiple times to have the old information removed, but without success. We plan to submit our improved products for testing when we can ensure that they are stored and used according to our directives.

More information is available here: xinix.se/pages/who

Our products do not affect the intestinal flora at all. The great thing about them is that you DO NOT ingest any chemicals whatsoever.

Simply put, chlorine dioxide reacts with microorganisms in the water, but then the active substance as such is consumed.

The only residue you have left is barely measurable amounts of salt. This is in contrast to chlorine, which you dissolve in the water and then ingest.

NO.

In the process we use, our premixed product is 99.85% water, and our 2-component product cannot form explosive gas.

2-K (two-component) products have <7% for sodium chlorite and <9% for the hydrochloric acid solution. These concentrations are printed on the labels.

There is no simple answer for 1-K (one-component) products: Chlorine dioxide is a so-called "radical." As such, the product cannot continuously maintain a constant concentration. The expiration date is the important value here. The product will perform its task when used within the expiration period and according to the instructions. Chlorine dioxide is an effective disinfectant that can eliminate very different bacteria down to very low concentrations.
During manufacturing, the product can also end up with different levels of concentrations.

FreeBact® Water Dosage is based on a closed two-component system where chlorine dioxide is generated in very small volumes directly in a reactor integrated into the facility. It is not produced in bulk or stored, which eliminates the risks of explosiveness or leakage. The system is designed for safe operation in properties and bathing environments, with built-in interlocks and controls that ensure correct dosing. Differences between by-products of chlorine (Cl₂) and chlorine dioxide (ClO₂):

• When using chlorine (e.g., sodium hypochlorite or chlorine gas), there is a clear risk of forming chlorate (ClO₃⁻), especially when hypochlorite solutions are stored over time. Furthermore, chlorine can react with organic matter and ammonium in the water to form undesirable by-products such as trihalomethanes (THM) and other chlorinated organic compounds.
• When using chlorine dioxide, primarily chlorite (ClO₂⁻) and to a lesser extent chlorate are formed, but at significantly lower levels than with chlorination. Chlorine dioxide does not produce trihalomethanes or other chlorinated organic by-products. With proper control and dosing, the levels of chlorite and chlorate are well below international guidelines.

Please note that our product is made from high-quality raw chemicals with very high purity and that we do not produce chlorine dioxide gas at all. In our closed system, small amounts of solution are generated directly in the reactor on-site – never gaseous chlorine dioxide – which makes the process both safe and controlled.