In fact, Orbital Osmosis is a comparable technology. The technology is patented and even the name is a protected term. However, it differs from conventional reverse osmosis systems in many respects.

Comparison with reverse osmosis

Orbital osmosis also works with a membrane filter in the nano range, similar to reverse osmosis. However, there are significant differences in terms of efficiency, hygiene, water consumption and energy requirements.

Reverse osmosis is considered the most complex filtration method on the market. Water is pressed at high pressure through a membrane that only allows water molecules to pass through. Pollutants such as nitrate, phosphate, heavy metals, chemical residues from agriculture and drug residues are removed.

A major disadvantage of reverse osmosis is the high water consumption: around three liters of tap water are required for one liter of filtered water. In addition, the membrane must be cleaned regularly and changed frequently, which increases maintenance costs and shortens the service life.

Advantages of Evodrop's orbital osmosis technology

Evodrop's patented membrane has been proven to filter all pollutants out of the water. This performance has been confirmed by two independent, accredited Swiss laboratories. Only one liter of tap water is needed to obtain one liter of pure water.

In addition, the membrane is particularly durable: it only needs to be replaced after 10,000 liters or after five years at the latest. With a daily consumption of six liters of drinking water, this corresponds to a replacement period of around four and a half years.

In addition, Evodrop uses food-safe, NSF-certified hoses in its drinking water filters that meet the highest standards of medical technology - the same hoses that are also used for infusions.

Superior filtration depth

The Evodrop system filters pollutants down to a size of 0.0055 micrometers from the water. By comparison, ionizers only reach 0.1 micrometres. This means that water that has been treated with ionizers still contains numerous pollutants.

Further information (PDFs)

•  Health significance and effects of "osmosis water" (PDF)
• The miracle of water (PDF)
• What do doctors and experts say about demineralized osmotic water? (PDF)

Tap water is often advertised with superlatives as the "best controlled food" in Germany. However, this statement is misleading, as the Regional Court of Hanover found in December 2020 (judgment 18 O 178/19 of 07.12.2020). The court prohibited the advertising with this reference, as it is an unlawful advertising claim.

Court judgment

According to the court, the statement suggests absolute certainty, which is not the case in practice. Water suppliers only guarantee quality up to the house connection. From there onwards, domestic pipes, stagnant water, aerators or other factors can affect the water quality. Contamination cannot be completely ruled out in the public network either.

The court came to the conclusion: "From a strict point of view, tap water is actually no longer controlled at all at the point at which it legally becomes a foodstuff (at the point of use)."

Test results, for example from Stiftung Warentest, cannot support the advertising claim either. They only test whether tap water meets the requirements of the Drinking Water Ordinance - not whether it is checked more closely or more frequently than other foods.

Number of checks is not a quality feature

The high number of tap water inspections is often cited as a sign of quality. In fact, they are a necessity, as tap water usually has to be treated. Mineral water, on the other hand, comes from protected underground deposits and is characterized by its original purity.

Different sets of rules

The Drinking Water Ordinance applies to tap water, while the Mineral and Table Water Ordinance (MTVO) applies to mineral water. While tap water has to undergo many checks as it comes from groundwater and surface water, the focus for mineral water is on maintaining its original purity. Mineral springs are obliged to use an HACCP quality assurance system and to check important parameters daily or even several times per shift. In addition, 26 legally defined limit and orientation values apply to all mineral springs. If these are permanently undercut, mineral water receives official recognition - unique among foodstuffs.

Limit values in comparison

The legal requirements for tap water and mineral water are similarly strict in terms of health, but differ in detail. In the case of tap water, the limit values are not only based on health considerations, but also on technical reasons - for example, to prevent corrosion in the pipe network or damage to household appliances. Calcium is sometimes removed in order to regulate water hardness. Such interventions are not permitted for mineral water.

Conclusion

Food in Germany is strictly controlled. Consumers can rely on its safety. However, the claim that tap water is the "best controlled food" remains an advertising slogan - not a fact.

Limited controls

Only around 50 foreign and harmful substances are tested in our tap water. The oft-repeated claim that tap water is the "best controlled food" is not true. Samples are taken at the waterworks - not at the tap, where the water is actually used.

The Hanover Regional Court ruled in 2020 (18 O 178/19) that this advertising claim is misleading. It suggests a level of safety that is not guaranteed in practice. From the house connection onwards, pipes, aerators or stagnant water can impair the quality.

Unknown pollutants

Many substances such as microplastics and nanoplastics are not even tested as there are no limit values. Substances such as microplastics or aluminum can enter the body and cause damage. In total, there are over 3000 possible contaminants in water. As the chemicals used in agriculture or industry are not always disclosed, laboratories are often in the dark.

In medicine, too, new active substances are added every year - from antibiotics to chemotherapies. Sewage treatment plants can hardly break these down, as purification is based on microorganisms that naturally cannot develop resistance to antibiotics.

Questionable limit values

Even with tested substances, limit values are exceeded - often with the claim that this is "harmless". In fact, limit values are regularly revised upwards. However, studies show that even low concentrations can have health consequences, for example in the case of nitrate.

Further loads

Additional inputs come from industry and construction, whose chemicals are hardly traceable. The so-called "last meters" in the pipe system also harbour risks: Lead, copper or cement can get into the water. Studies in Switzerland have also shown increased uranium levels in regions with uranium-bearing rock.

In addition, pollutants enter the water through the air, floods or old contaminated sites - such as remnants from industrialization or nuclear waste disposal.

Conclusion

Today we live in a world full of pollution. There are plenty of pollutants in the air and food anyway. This makes it all the more sensible to consume water - our most important means of transportation and cleaning - as cleanly as possible. Because if you don't filter the water, you are the filter.

Mineral water is often seen as a high-quality alternative to tap water, but there are important aspects to consider:

1. Regulatory requirements:
   The Mineral Water Ordinance only regulates around 20 limit values, which is less than the regulations for tap water. Tap water is subject to stricter controls in terms of safety and quality.
2. Packaging and environmental impact:
   Many mineral waters are bottled in plastic bottles, which can contribute to environmental pollution. In addition, substances such as microplastics or plasticizers can get into the water. Although glass bottles are an alternative, they have a higher CO₂ impact due to the manufacturing and transportation process if they are not reused often enough.
3. Practical aspects:
   Using a filter system such as EVOfilter can make everyday life easier, as you no longer have to buy or carry heavy water bottles. You also have access to filtered water straight from the tap at all times.
4. Flexibility and costs:
   With a filter system, you save money in the long term as there is no need to repeatedly buy bottled water. It is also a more sustainable option as there is less waste.

The EVOfilter therefore offers you a simple, environmentally friendly and economical way to treat your drinking water conveniently at home.

Importance of minerals in water

Minerals are important - but it depends on the form in which they are ingested. In drinking water, it is important to distinguish which minerals can be used by the body and which could be a burden. With the Evofilter, only those minerals that are potentially usable remain in the water.

Minerals from water and food

Drinking water and mineral water contain different amounts of minerals such as calcium and magnesium. A study conducted by Paderborn University on behalf of Forum Trinkwasser e.V. examined the importance of water for mineral supply. The result: water low in minerals is particularly suitable for hydration, while minerals are mainly supplied by solid food. So-called organically bound, biologically available minerals are important.

Exposure to inorganic minerals

Inorganic mineral salts in water are often difficult for the body to utilize and could even be a burden. For example, they can accumulate on crystals, promote the formation of deposits or contribute to the formation of stones. Just as water pipes become calcified with a high limescale content, residues could also build up in the body.

Difference between organic and inorganic minerals

As with all nutrients, minerals are generally more readily available in an organically bound form, for example through plants. Plants also contain secondary substances that can support absorption - similar to how vitamin D3 works better together with K2. Vitamin C is also comparable: as isolated ascorbic acid it is less well absorbed, but in apples it is much better. The same applies to minerals: minerals that are not organically bound in water are less easily absorbed and have to be excreted via the kidneys. Excess minerals could be deposited in the body and possibly contribute to the formation of stones.

Example: Osmotic pressure

The example of the cucumber in distilled water illustrates osmotic pressure: cells constantly regulate their salt content in exchange with their environment. However, it would not be correct to conclude from this that distilled water is fundamentally harmful to humans. Salt reserves in the body generally prevent an imbalance. Millions of people drink distilled water without any noticeable problems - some even report positive experiences. Hydrologist Prof. Vincent also pointed out that cleansing processes in the body could be particularly effective with pure water. In addition, nanofiltered water is not distilled, as it still contains trace elements.

Voices of doctors and researchers

Many doctors and researchers believe that soft, mineral-poor water could penetrate deeper into tissue and prevent deposits. Dr. Charles Mayo from the Mayo Clinic wrote that hard water could form insoluble compounds with fats, which could burden the metabolism and organs and promote the formation of stones. The Austrian magazine "Gesundheit" and Dr. Barbara Hendel also point out the possible benefits of low-mineral water.

WHO assessment

The WHO emphasizes that there is no reliable evidence for the health benefits of mineral-rich water. There are no known negative effects of water low in minerals. Minerals are mainly absorbed through food. A balanced diet provides sufficient vitamins and minerals - and pure water can fulfill its most important task: to cleanse and hydrate the body.

The renowned NIH, National Library of Medicine, has asked itself this question. Doctors and scientists trust this institution.

In addition, on behalf of Forum Trinkwasser e.V. (one of the largest drinking water associations in Germany), scientists from Paderborn University, led by Professor Helmut Heseker, investigated the importance of water in meeting mineral requirements. The long version of the study can be found in the appendix. The scientists came to the conclusion that water low in minerals is ideal for meeting fluid requirements. The German population's need for the most important minerals is primarily covered by solid food. So-called "organic" biologically available minerals.

To summarize:

Minerals in drinking water correspond to a maximum of 10% for calcium and 7% for magnesium of the recommended daily intake of 2 liters per day. Most trace elements are not even detectable and it has been scientifically proven that they cannot be easily absorbed by humans through drinking water.

→ Here is the German summary and here is the complete original study.

The contribution of drinking water to human mineral nutrition - Drinking Water and Health, Volume 3 - NCBI Bookshelf

→ https://www.ncbi.nlm.nih.gov/books/NBK216589/

→ Study on the nutritional importance of drinking water in Germany

1. Nerbrand et al. (2003): The influence of calcium and magnesium in drinking water on cardiovascular risk factors
   Summary: This study investigated the relationship between increased levels of calcium and magnesium in drinking water and cardiovascular risk factors in people living in areas with soft and hard water. The results show that there is a significant association between elevated calcium concentration in water and major cardiovascular risk factors, whereas magnesium in water or minerals in the diet did not show a comparable influence. This suggests that high calcium in drinking water could be a complex risk factor for cardiovascular disease.
2. Morr et al. (2006): Calcium content in bottled and tap water
   Summary: This study looks at calcium concentrations in bottled and tap water and their relevance for medical treatments. The results show that calcium levels vary widely and are typically as low as 8-20 mg/L in "longevity zones" in Russia. This suggests that low calcium concentrations in drinking water may correlate with longer life expectancy.
3. Druzhyak (2005): Water for health and longevity
   Summary: Druzhyak emphasizes that the calcium concentrations in the drinking water resources of regions with high life expectancy in Russia are extremely low (8-20 mg/L). This supports the hypothesis that low mineral content in drinking water may contribute to health and longevity.
4. Siener et al. (2004): Mineral water and the risk of calcium oxalate crystallization
   Summary: This study investigated how mineral-rich water (with high concentrations of magnesium, calcium and bicarbonate) influences urine composition. It was found that consumption of such water can increase the risk of calcium oxalate crystal formation. This suggests that a high mineral content in the water could play a role in the formation of urinary stones.
5. Bellizzi et al. (1998): Influence of water hardness on kidney stone risk
   Summary: This study analyzed the effects of hard and soft water on urinary composition in patients with idiopathic nephrolithiasis. The results show that hard water significantly increases urinary calcium concentration, which increases the risk of calcium stone formation. Soft water (e.g. Fiuggi water) is considered more beneficial due to its lower risk profile.

These studies suggest that low levels of minerals in drinking water could potentially be beneficial, particularly in relation to cardiovascular disease and kidney stones.

Water in the human body

In middle age, our organism consists of around 70% water. In infants, the proportion is around 80 % and in old age around 60 %. These figures illustrate the central importance of water.

The picture on our planet is similar: around three quarters of the Earth's surface is covered by water, with only a quarter consisting of land. Depending on the species, plants contain between 20 % and almost 100 % water. Even stones and metals are not completely free of water.

Tasks of water

Water fulfills numerous functions in the body:

• Heat conduction and temperature equalization
• Transport and solvents
• Buffer and protection system
• Upholstery and filler
• Cleaning vehicle

The cleansing function is particularly important. Around 180 liters of fluid are filtered in the kidneys every day, of which around 178 liters are reabsorbed. This means that important substances remain in the body, while urinary substances such as salts, uric acid, heavy metals and degradation products are excreted.

Stress on the kidneys

If the kidneys can no longer cope with this work, there is a risk of gradual poisoning of the body. Tiredness, lack of concentration or high blood pressure can be the first signs. Additional salts or heavy metals from food and drink have a particularly harmful effect, as they can overload the fine renal tubules.

Inorganic and organic minerals

A central problem lies in the distinction between organically bound and inorganic minerals. The latter are difficult for the organism to utilize and can be deposited in the body - similar to lime in pipes. Organically bound minerals, such as those found in plants, are more readily available. The pharmaceutical industry therefore also binds minerals to organic substances such as citrate or gluconate in order to increase bioavailability.

Overuse and its consequences

An excess of inorganic minerals can change the blood environment: The pH value increases and the electrical resistance (rho value) decreases. Such conditions favor vascular diseases and aging processes. The growing consumption of mineral-rich water is associated with an increase in cardiovascular diseases. Too much matter - whether in the form of minerals or in traffic - leads to "congestion", which impedes the flow of life. 

Drinking water quality

Clean drinking water should be free from heavy metals, pesticides, bacteria and other pollutants - and at the same time contain as few inorganic minerals as possible. The mineral requirement is covered by plant and animal foods. Water, on the other hand, is primarily used as a solvent and cleaning agent.

Research results

Prof. L.C. Vincent from the Institute of Anthropology at the University of Paris showed in decades of research that laboratory animals remained healthier and lived longer if they were given water that was low in minerals. In contrast, disorders occurred more frequently with mineral-rich water.

Conclusion

Low-mineral water can be considered a valuable cleansing aid for body and mind. Among the available methods, reverse osmosis is considered the most effective way to obtain such water. Perhaps truly clean water leads not only to physical clarity, but also to mental clarity.

Ionizers are often used to change the pH value of water and make it alkaline. There are a few points that should be taken into account:

1. pH changes in the water: Ionizers change the natural pH value of the water, which could have long-term effects on the body. It should be borne in mind that the body has natural mechanisms for regulating the acid-base balance.
2. Filtration of pollutants: Ionizers usually use activated carbon filters, which in certain cases can only remove larger particles or contaminants up to a certain size. This means that potential pollutants such as heavy metals, chemicals or microplastics may not be completely removed.
3. Scientific basis: There is currently no unanimous scientific opinion on the health benefits of ionized water. When choosing a water treatment system, it makes sense to focus on technologies that have been independently tested and can effectively remove certain contaminants.
4. Safety of use: It is important to ensure that water treatment systems are tested for their filtration performance and potential impact on water quality. Systems that filter additional contaminants may be more useful for reliable water treatment.

In summary, it is advisable to inform yourself well before buying an ionizer and to check possible alternatives that remove pollutants more efficiently or are more sustainable.

Advertising often claims that reverse osmosis membranes have a pore size of 0.0001 micrometers, which corresponds to 0.1 nanometers. However, this statement does not correspond to physical reality and is not scientifically tenable. It is often used purely for marketing purposes and leads many consumers to a false understanding of how reverse osmosis actually works.

Reverse osmosis membranes consist of several layers, with the separating layer consisting of a dense polyamide. This layer is produced using a special process in which two chemical components combine at an interface to form a dense polymer film. Underneath this is a mechanically stable carrier layer made of polysulfone or polyethersulfone, which supports the membrane but does not perform a separating function itself.

There are no open pores in the active polyamide layer, such as those found in a sieve or filter. Instead, the structure is amorphous and dense, comparable to a close-meshed network on a molecular level. Water is not transported through pores, but via a so-called solution diffusion mechanism. Due to their small size and polarity, water molecules dissolve in the polymer matrix of the membrane, diffuse through the material and emerge on the other side. This process is only possible for certain molecules, especially water. Dissolved salts, heavy metals, drug residues or other pollutants are retained in the polymer either because of their size or because they are not chemically soluble.

A single water molecule has an effective diameter of around 0.275 nanometers. A membrane with real pores of only 0.1 nanometers would completely retain even water, which would make the function of reverse osmosis impossible. The often quoted pore size of 0.1 nanometers is therefore not a real physical value, but a mathematically derived approximation based on the retention rate of certain molecules. This figure has become commonplace in marketing over the years, but does not correspond to the actual structure and function of the membrane.

Evodrop deliberately relies on scientifically substantiated values when specifying the effective separation characteristics. Our membranes have an effective molecular separation efficiency of around 0.5 nanometers. This value is based on the actual physical properties of the materials used, on measurements and on the analysis of the actual molecule sizes that are retained or allowed to pass through. In this way, we guarantee not only transparency but also technical accuracy, which is essential for applications in the field of water treatment.

The following scientific sources prove this connection and the physical principles of modern membrane technology:

• Mulder M. (1996). Basic Principles of Membrane Technology. Kluwer Academic Publishers
• Baker R. W. (2004). Membrane Technology and Applications. Wiley
• Werber J. R., Osuji C. O., Elimelech M. (2016). The critical need for increased selectivity, not increased water permeability, for desalination membranes. Environmental Science and Technology Letters
• Park H. B. et al. (2006). Polymers with cavities tuned for fast selective transport of small molecules and ions. Science
• Freeman B. D. (1999). Basis of permeability and selectivity tradeoff in polymeric gas separation membranes. Macromolecules

For the best possible filtration performance, we recommend a 30-second pre-rinse time.

If the water has stagnated for more than a week, it is advisable to let it run for a minute. The membranes relax when not in use. In technical jargon, this phenomenon is known as a "TDS gap". The membranes relax after a certain time due to the standstill of water pressure and pump pressure.

As a result, we recommend allowing the membranes to pre-run for approx. 30 seconds.

The pre-rinse water can be used without hesitation for watering house plants.

The filter must be serviced after 10,000 liters or at the latest after 5 years with a water hardness of up to 40°fH. The cost of the replacement kit is 499CHF. For 699CHF the maintenance is carried out by our service technician and for 990CHF the guarantee can be extended for a further five years if desired.

The EVOfilter comes with a five-year warranty. The warranty can be extended. Please note, unlike competitors such as Truu Water, we do not only cover the housing, but the entire system.

The EVOfilter emits an acoustic signal after 10,000 liters when the filter is used. The pre-filter and the two membranes should then be replaced within the next 2000 liters.

Filter maintenance is child's play in two minutes thanks to a bayonet catch.

The EVOfilter is installed at any water connection in your home. This can be the kitchen, the cellar or the bathroom. The EVOfilter is not installed directly on the main inlet water pipe in the house!

You need a cold water connection, a power socket, enough space for the filter and a waste water siphon.

Of course, we leave the choice of installation to you and you can install the EVOfilter yourself. However, we recommend professional installation by a plumbing specialist, who can also guarantee the installation.

We offer a five-year guarantee on the entire filter, provided that the filter has been installed correctly and is used as intended. Optionally, the warranty can be extended by a further five years for an additional charge.

The system is automatically flushed every four hours to prevent bacteria from building up and multiplying - the Swiss standard is once a day. This means we are well above the SVGW values. In addition, our membrane is smaller than the bacteria and no more bacteria can form. Finally, the structure of the Evodrop membrane guarantees a constant filter performance because it does not become dirty and clogged due to the larger contact surface, as can happen with conventional reverse osmosis systems, for example. Finally, the Evodrop system has a small germ filter to ensure germ-free water. In contrast, the competition either offers no solution or, paradoxically, irradiates the water with UV. Last but not least, all hoses in the EVOfilter are treated with a natural antimicrobial coating so that no bacteria can settle in the entire system. The EVOfilter has a total of four patented technologies that make it the best and safest filter on the market.

You can also use this for a rented apartment without any problems. Everything is included in the price, from the installation kit to a new tap. However, we recommend buying a 3-in-1 tap for a rented apartment (through us or Sanitary) so that you don't have to drill a separate hole. You can find our range of different taps in the online store. Alternatively, you can easily install a small separate tap next to the stopper or soap dispenser without having to drill a hole. The system can be easily dismantled and taken away.

You are welcome to contact us by telephone, send us an e-mail or order a filter directly via our webshop.

The pH value describes whether a liquid is acidic, neutral, or alkaline. Drinking water naturally ranges from slightly acidic to neutral. This range is technically normal and poses no sensory problems.

Water filtered by Evodrop typically has a pH value of around 6.5 to 7.0. This value is within the natural range of many beverages and foods.

It is important to take an objective view:
The measured pH value of a beverage does not allow any conclusions to be drawn about how it is processed in the human body. The body's acid-base balance is regulated by complex physiological mechanisms and is not directly influenced by the pH value of individual beverages.

A well-known example from nutrition science illustrates this point: Lemon juice has a low pH value, but is processed differently in the metabolism than the measured value would suggest. This example shows that the pH value of a food is not a reliable indicator of its physiological classification.

Many fruits and vegetables also have a pH range between approximately 5.5 and 7.5, without this affecting their quality or tolerability.

Devices for producing so-called alkaline water increase the pH value by adding additional, mostly inorganic minerals to the water. This increases the mineral concentration and, as a result, the pH value. This technical modification of water is often advertised as having health benefits, but is scientifically controversial.

A key point is the physiological role of the stomach. The human stomach works under highly acidic conditions with a pH value of around 1.5 to 2. This acidity is essential for protein digestion, killing germs, and mineral absorption. If highly alkaline water is consumed regularly, the stomach must neutralize these bases. This does not lead to relief, but on the contrary to increased acid production as a compensatory reaction.

It is important to make a clear conceptual distinction here:

Alkaline water with pH values above 8 and added inorganic minerals is not equivalent to fresh fruit and vegetables. Plant-based foods contain organically bound minerals and typically have a pH range of around 5.5 to a maximum of 7. Their effect on metabolism is fundamentally different and cannot be transferred to technical, alkalized water.

Scientific background and classification

The health benefits of alkaline water are not universally accepted among experts. To date, there are no reliable long-term studies that prove a lasting health benefit from permanently increased drinking water pH. However, it is known that water with a high calcium or magnesium content reacts with oxygen under certain conditions, causing the pH value to rise. Whether this change is beneficial does not depend on marketing promises, but on physiological needs, and these do not usually exist in healthy people.

The electrolytic separation of water into acidic and alkaline components is also viewed critically. Several experts point out that this artificial polarization of water does not correspond to natural drinking water or human physiology.

Classification of filter technology

The benefits of high-quality water filters for reducing pollutants and unwanted residues are undisputed. However, optimizing water quality should focus on purity, sensory quality, and pollutant reduction, not on forced pH manipulation. A filter is useful. Electrolysis with separation into acidic and alkaline water, on the other hand, is not scientifically justifiable.

Expert voice from the scientific community

In this context, it is worth taking a look at critical specialist articles, such as those by Jordan Petrow. He combines medical and engineering perspectives and has been dealing with systemic relationships in physiology for decades. His explanations question simplified concepts such as the blanket alkalization of the body and place them in a broader physiological context.

Risks and counterarguments

There is no reliable evidence that alkaline water permanently "deacidifies" the body. The body regulates its acid-base balance with high precision via the lungs, kidneys, and buffer systems. External manipulation via drinking water is neither necessary nor particularly effective in everyday life and can be counterproductive in extreme cases.

Specific recommendation

From a technical and legal perspective, it is advisable to exercise caution when making statements about alkaline water. It makes sense to focus on clean, pollutant-free drinking water without unnecessary chemical or electrolytic changes. Anyone wishing to obtain more detailed information should refer to independent specialist sources and scientific discussions and critically question marketing promises.