System 3H
Eliminating biofilm in 3 stages — diagnosis, removal and long-term protection
Intelligent water sanitisation technology that protects production, reduces chemical consumption and supports the achievement of ESG goals.
Why do traditional cleaning methods fail in the fight against biofilm?
Biofilm is a complex structure of microorganisms in which up to 90% consists of a protective extracellular matrix.
Standard cleaning methods and chemicals only remove bacteria flowing freely through the system — leaving the source of contamination untouched.
Secondary contamination: sudden ingress of bacteria into the finished product.
Under-deposit corrosion: Accelerated deterioration of installations, especially those made of stainless steel.
Flow resistance: Higher energy consumption and reduced system performance.
Reputational risk: Product batch recalls and financial losses.
See how biofilm develops in water systems
That is why we created System 3H — an approach that eliminates biofilm at the source.
Why does System 3H effectively eliminate biofilm where other methods fail?
Effective biofilm elimination does not come from using a single chemical agent, but from combining the right diagnostics, technology and process control.
System 3H combines these elements into a coherent, predictable solution tailored to the installation's operating conditions.
That is why System 3H is not a chemical product — it is a complete technological solution for the lasting elimination of biofilm.
A comprehensive approach instead of a single product: We don’t take piecemeal action — we solve the problem at its source. System 3H covers diagnosis, parameter selection, the biofilm removal process and long-term protection of the installation, so the effect is not temporary.
Effectiveness of chlorine dioxide within the biofilm structure: Chlorine dioxide (ClO₂) is one of the few substances capable of penetrating biofilm structures. This allows it to reach bacteria protected by the extracellular matrix and enables their effective removal – not just from the surface, but from the entire structure.
Precise tailoring to the installation: Every installation requires a different approach. System 3H is designed individually to suit the flow rates, materials, temperature and specific nature of the process, ensuring maximum effectiveness.
Control and stabilisation of results: Biofilm elimination is a process, not a one-off action. System 3H includes monitoring of effectiveness and maintenance of operating parameters, which prevents biofilm from re-forming.
CUSTOMERS
System 3H in 3 steps
From an installation audit, through biofilm removal, to long-term protection of the system. We tailor each stage to the specifics of the plant and the requirements of the process.
1
Audit and diagnosis
We analyse the installation, identify biofilm and select an effective sanitisation strategy.
installation analysis
microbiological testing
biofilm assessment
risk analysis
action plan
2
Cleaning and implementation
We remove biofilm, restore microbiological safety and implement a solution tailored to the installation.
biofilm removal
disinfection
sanitisation
parameter selection
system commissioning
3
Protection and stabilisation
We monitor results, maintain microbiological stability and ensure long-term protection of the system.
monitoring
testing
calibration
parameter control
maintaining results
RESULT
Laboratory-confirmed results
The graph shows the moment System 3H was started. After 48 hours, the number of microorganisms in circulation falls below the detection limit, and microbiological stability is maintained at a constant level throughout the production cycle.
Microbiological testing of water in the drinking-water system
Comparison of results before and after implementing ProOxine® technology — pig farming, closed cycle
Before implementation: sampled 16.01.2026, result 25.01.2026 (Report 130/2026/B)
After implementation: sampled 04.02.2026, result 11.02.2026 (Report 285/2026/B)
Parameter
Before implementation
After implementing ProOxine®
Parameter
Coliform bacteria
CFU / 100 ml
>300
0
↓↓ elimination
Escherichia coli
CFU / 100 ml
21
0
↓↓ elimination
Faecal enterococci
CFU / 100 ml
49
0
↓↓ elimination
Coagulase-positive staphylococci
CFU / 100 ml
0
0
✓ no change
CFU / 1 ml
>300
6
↓↓ >98%
CFU / 1 ml
>300
2
↓↓ >99%
Salmonella spp.
presence
Not found
Not found
✓
Raw water samples taken from the drinking-water system before ProOxine® dosing was started and after the implementation period.
EHT Poland • ProOxine® technology • Water hygiene in livestock production
Microbiological parameters of water in the drinking-water system
Comparison of results before and after implementing ProOxine® technology —pig farming, fattening
Before implementation: system condition without ClO₂ sanitisation
After implementation: continuous ProOxine® dosing
Parameter
Before implementation
After implementing ProOxine®
Parameter
Coliform bacteria
CFU / 100 ml
>200
0
↓↓ elimination
Escherichia coli
CFU / 100 ml
35
0
↓↓ elimination
Faecal enterococci
CFU / 100 ml
4
0
↓↓ elimination
Coagulase-positive staphylococci
CFU / 100 ml
0
0
✓ no change
CFU / 1 ml
>300
<20
↓↓ >93%
CFU / 1 ml
>300
<10
↓↓ >96%
Salmonella spp.
presence
Risk of presence
Not found
✓ elimination
Raw water samples taken from the drinking-water system before ProOxine® dosing was started and after the implementation period.
EHT Poland • ProOxine® technology • Water hygiene in livestock production
-30%
rinse water consumption
-50%
spending on corrective chemicals
100%
consistency of microbiological test results
Effectiveness in practice
Continuous sanitisation vs. shock treatment
Automatic activation systems
The effectiveness of chlorine dioxide does not depend solely on the quality of the product. The way it is activated and precisely dosed is just as important.
System 3H uses automatic activation systems developed by a team of experienced engineers, which eliminate the need to prepare the working solution manually and guarantee user safety, process consistency and a stable ClO₂ concentration, ensuring effective microbiological control of the installation throughout its service life.
AANE™
No power supply required
An automatic activation system that independently prepares the working solution and refills the tank exactly when needed.
Ideal for small and medium-sized installations that need a simple, reliable solution.
EDIE™
Smart dosing
An electric activation system with a dual dosing circuit, using intelligent control to automatically prepare and precisely dose chlorine dioxide solution.
It ensures high accuracy and stability of process parameters.
TITAN™
Maximum capacity
An advanced PLC-controlled system, designed for large-scale installations with high chlorine dioxide requirements.
It enables automatic preparation of the solution and maintains the set concentration even at very high flow rates.
From simple installations to the largest industrial plants, we select an activation and dosing system perfectly matched to the needs of your facility.
AANE™
EDIE™
TITAN™
Small and medium-sized installations
Medium and large installations
Large-scale industrial installations
No power supply required
Smart dosing
PLC control
Automatic activation
Precise process control
Highest capacity
Easy to use
Integration with automation systems
24/7 operation
At EHT, we don’t just supply products and equipment.
We design complete systems for microbiological safety, combining specialist expertise, proven technologies and intelligent automation.
CUSTOMERS
Trusted by
TESTIMONIALS
Customer testimonials
We are trusted by clients for whom hygiene, safety and process efficiency are of key importance.
ABOUT US
Over 15 years’ experience
in biosecurity
15+
years of experience in international markets.
completed implementations in industrial systems.
countries served
(Poland, Scandinavia, the Baltic States, Western Europe).
QUALIFICATIONS
Quality confirmed by tests and certificates
The effectiveness of our solutions is confirmed by research, approvals and certificates recognised in demanding industries.
Certificates:
OMRI Listed®
Organic Materials Review Institute
Hygiene Certificate
National Institute of Public Health (PZH)
– State Research Institute
ISO 9001:2015
The Certification Body of TÜV SÜD America Inc.
Tests carried out in accordance with the following standards:
STAY UP TO DATE
Knowledge base
FAQ
Frequently asked questions
What is System 3H®?
System 3H® is a comprehensive solution for maintaining the microbiological safety of water. It combines diagnostics, sanitisation of the installation, preparation of active ClO₂, dosing, monitoring and results reporting. The aim is to maintain a defined water quality standard, not merely to supply a chemical.
What is ProOxine?
ProOxine is a product based on sodium chlorite, used to prepare active chlorine dioxide. It is one of the components of System 3H®. On-site activation makes it possible to obtain a fresh and effective ClO₂ solution.
How does System 3H® work?
The system prepares active ClO₂, doses it into the water system and helps maintain appropriate microbiological parameters. Its operation is based on continuous monitoring and regular evaluation of effectiveness. As a result, the user has control over water quality throughout the entire production cycle.
How is active ClO₂ produced?
Active chlorine dioxide is produced in an activation unit by reacting ProOxine with a citric acid-based activator. The process takes place under controlled conditions and produces a solution of predictable concentration. The solution is then dosed into the system.
Why is ClO₂ prepared on-site?
On-site preparation limits loss of activity and ensures high efficacy. The user does not need to store large quantities of ready-made solution. This approach increases safety and improves process consistency.
How does Dosatron work?
The Dosatron uses the water flow to dose the product proportionally. It requires no electrical power and automatically adjusts the dose to the current flow rate. This makes it possible to maintain a stable concentration throughout the system.
Does ClO₂ remove biofilm?
Yes. Chlorine dioxide is recognised as one of the most effective technologies for controlling biofilm. It can penetrate the biofilm structure and reduce sites where microorganisms grow.
What is biofilm?
Biofilm is a layer of microorganisms, organic matter and metabolic products deposited on the internal surfaces of a water system. It acts as a reservoir for bacteria and other pathogens, and can cause secondary contamination of water even when the incoming water quality is good.
Why is biofilm a problem?
Biofilm protects microorganisms from the action of many disinfectants. It hinders the maintenance of microbiological water quality and can limit the effectiveness of medicines administered through the system. It is one of the most common causes of chronic quality problems.
Does ClO₂ work on bacteria?
Yes. Laboratory tests and operational experience confirm high efficacy against many bacterial species relevant to livestock production and water safety.
Does ClO₂ work on viruses?
Yes. Efficacy against numerous viruses has been confirmed, including H5N1, adenoviruses, and noroviruses. This allows the technology to support biosecurity programmes.
Has efficacy against H5N1 been confirmed?
Yes. In tests carried out in accordance with PN-EN 17122, a reduction exceeding 6 log was achieved. This means that more than 99.9999% of the tested virus population was eliminated.
What does a >6 log reduction mean?
This represents a very high level of disinfection efficacy. In practice, it means the removal of more than 99.9999% of the microorganisms present in the test sample.
Does ClO₂ work on Legionella?
Yes. Chlorine dioxide is commonly used to control Legionella. Its ability to act within biofilms and in extensive systems is particularly significant.
Does ClO₂ react with organic matter?
Yes, but selectively. It reacts primarily with specific chemical groups present in microorganisms and biofilm. This allows it to disinfect effectively without the classic chlorination reactions typical of chlorine.
Does ClO₂ react with proteins?
Yes. It oxidises selected amino acids and enzymes essential for the functioning of microorganisms. This is one of the main mechanisms of its biocidal action.
Does ClO₂ react with fats?
It can react with some fats, but far less than ozone or free chlorine. As a result, a greater proportion of the active substance is available to combat microorganisms.
Can microorganisms become resistant?
The classic resistance mechanisms seen with some other disinfectants are not observed. This is due to the different mechanism of action of ClO₂.
What is ORP?
ORP is an indicator of the oxidation-reduction potential of water. It gives information about the general chemical condition of the environment and can help assess the effectiveness of the sanitisation process.
Does ORP measure ClO₂?
No. ORP is not a direct measure of chlorine dioxide concentration. It should be interpreted alongside measurements of active ClO₂ and other parameters.
Why does water affect production results?
Water is the most important nutrient for animals. Its quality affects the health of the digestive tract, feed intake and production results.
Does water quality affect FCR?
Yes. Microbiological problems can impair feed utilisation and increase production costs. That is why water quality is one of the factors affecting farm efficiency.
What is the 3H® Water Standard?
It is a water quality management programme covering diagnostics, implementation, monitoring and reporting. Its aim is to maintain a defined standard of microbiological safety.
Why is 3H® not just another water additive?
Because the client is buying a result: water quality and process control. Chemicals are just one element of the whole system.
What does implementation involve?
It starts with a water audit and water testing. Sanitisation measures and monitoring are then put in place. Effectiveness is confirmed by follow-up testing.
Why are the new regulations important?
New regulations require risk management across the entire water system. Requirements for monitoring, documentation, and control of microbiological hazards are increasing.
Is water hygiene a cost or an investment?
It is an investment in production stability. The cost of the programme is usually small compared with the potential losses resulting from health and production problems.
Can ROI be calculated?
Yes. The analysis can take into account FCR, medication use, mortality and other economic parameters specific to the farm.