Rating of reverse osmosis water filters - which one is better to choose for washing? TOP in quality and price

Geyser Prestige

Geyser Prestige is a classic model of a household reverse osmosis system with a storage tank. When I say “classic”, I mean the interchangeability of filter cartridges. You can easily select SL10″ and InLine filter elements from other manufacturers for such equipment.

Available in 4 modifications: simple, with a mineralizer (M), with a pump (P), with a pump and mineralizer (PM). This approach allows us to cover most of the customer's needs. The basic model operates at a pressure of 3 atmospheres, the version with a pump – from 2.

By default it is equipped with a tank with a usable volume of 7 liters. If desired, it can be replaced with a more compact one, 5 or even 2 liters. The filter is installed under the sink, so sometimes the size of the tank is critical.

The base membrane (1812-50 GPD) produces up to 190 l/day. It can subsequently be replaced by increasing productivity to 285 (1812-75 GPD) or 380 (1812-100 GPD) l/day.

Atoll A-550 STD (A-560E)

Another classic, but made of the best plastic and on a steel frame. It also differs from its analogues in that American Pentek filter elements are used as pre-filters. This is, in a way, a sign of quality, because the cartridges of this brand are considered one of the best.

In addition to the standard model, there are modifications with a pump (A-550p) and a mineralizer (A-550m).

The membrane is a proprietary element 1812-50 with a nominal capacity of 120 liters per day from DOW Chemical. The system is equipped with one large tank with a useful volume of 12 liters. Due to its massive size, I recommend this model to those who have enough space under the sink, or do not plan to use it for anything else.

The best in-line reverse osmosis water filters

The devices are installed on the main line, so the resulting water is purified. Drinking water flows from all tapping points. Can be installed both at home and in offices, catering establishments and industrial enterprises.

Raifil R0588W 220 EZ (five-speed)

The South Korean manufacturer equipped its brainchild with two water pumps. For their operation, a 220 W power supply is required. These design features make it possible to pump liquid up to 1420 liters per day. The housing is equipped with an analog pressure gauge. Often used to prepare soft drinks in restaurants and bars. The installation is designed to purify 60,000 liters of water. A distinctive feature of the station is that it is equipped with five reverse osmosis membranes.

Purchasing the goods will cost 55,500 rubles.

Raifil R0588W 220 EZ (five-speed)

Advantages:

• two pumps;
• five stages of cleaning;
• pressure gauge;
• long resource.

Flaws:

• overpriced;
• no storage tank included.

Geyser Prestige Maxi 1500

Domestic product. Productivity – 1.04 l/min. Equipped with a single housing in which the module and all cartridges are located. There are support legs. Installation to the main line does not cause any difficulties. Parameters: 430*860*270 mm. Weight – 25 kg. Widely used in catering establishments.

The purchase price is 46,758 rubles.

Geyser Prestige Maxi 1500

Advantages:

• cleaning from free chlorine;
• the body is equipped with a pressure gauge;
• no costs for regeneration reagents;
• ease of installation.

Flaws:

• storage capacity is not provided;
• The membrane is difficult to replace.

Aquaphor DWM-101s Morion

Aquaphor offers an interesting technical solution. DWM-101s Morion combines the use of disposable modules, a water-water tank and sophisticated automation. The design has only 4 cartridges, and the last one works as a post-filter and mineralizer. All of them are vendor lock-in, i.e. replacement only with products from Aquaphor.

With a major focus on ease of maintenance, all cartridges can be replaced within 1 minute without the use of tools. The presence of a 5-liter water-water tank is designed to ensure the system operates at a pressure of 2 atmospheres, while most other reverse osmosis filters operate at 3 atmospheres. and higher. The tank is already built into the body, so the model is compact: 371x190x420 mm. A sophisticated mechanical automation system is responsible for smooth operation, so you always need to be prepared for surprises on its part.

It's important not to get confused. Until 2015, Aquaphor produced DWM-101 systems. This is exactly what is shown in the next video.

The only difference from the current version is the design of the membrane block. In the old K50 module, the drainage was diverted through a separate hole at the bottom. The appearance was spoiled by the “extra” tube. Now the filter is equipped with a K50S module with a corresponding mounting socket. Therefore, membranes from the old model do not fit the new ones, and vice versa.

TOP 8 best filters for sinks with reverse osmosis

To compile the rating, we studied reviews of the most popular filters, as a result of which we selected 8 options with the best price-quality ratio. Each of them copes effectively with cleaning and has sufficient performance for the home.

AQUAPRO AP-600

An inexpensive filter with reverse osmosis that will purify 12 liters of water in an hour. It is compact, so it can be placed under almost any sink.

The five-stage filtration system guarantees clean water that can be used for drinking and cooking. First, the water is purified from particles with a size of up to 5 microns. Then the unpleasant odor, chlorine, etc. are removed from it. It will take no more than 15 minutes to replace the cartridges.

AQUAPRO AP-600

• High quality membrane.
• Low price.
• Quick replacement of cartridges.
• Easy to install.

• The kit does not include fum tape and lubricant for the rubber bands.

Electrolux RevOs OsmoProf500

The mechanical filter of the model has a long service life. All thanks to its gradient structure, due to which the degree of filtration changes within 10-5 microns. Therefore, dirt particles are distributed evenly, and the upper layers do not quickly clog.

The degree of filtration of the osmotic membrane is 0.0001 microns, so the water will be purified from viruses and bacteria. Purified water does not even need to be boiled; it can be drunk immediately.

Electrolux RevOs OsmoProf500

• High quality plastic.
• The mechanical filter lasts a long time.
• Easy to care for.
• Effectively removes hardness salts, so scale will not form in the kettle.

• No drainage clamp included.

Aquaphor DWM-101S Morion

The innovative model has a water-water tank, which allows the owner to save about 9 tons of water per year, compared to classic systems with a water-air tank.

The filter has a mineralizer, so the water will not only be clean, but also enriched with magnesium and calcium. No tools are required to replace modules. You can use it even with low pressure in the water supply.

Aquaphor DWM-101S Morion

• Small dimensions.
• Water mineralization.
• Quick replacement of modules.
• Easy installation.

• It makes a little noise after turning off the tap.

Geyser Prestige M (12 l)

After purification with this reverse osmosis filter, the water will be similar in properties to glacial melt water. It is considered very beneficial for health.

Filtration is carried out using a semi-permeable membrane. It has tiny pores through which only water molecules can pass. Harmful impurities and bacteria will not be able to pass through the membrane, which guarantees the highest degree of purification. The carbon post-filter improves the taste of water, and the mineralizer saturates it with useful microelements. The design has multi-colored tubes, which greatly simplifies the assembly of the system.

Geyser Prestige M (12 l)

• High quality connecting elements.
• Availability of a mineralizer.
• Good water pressure.
• Inexpensive consumables.

• Short tubes for connection.

BARRIER PROFI Osmo 100 Boost M

The model can be easily and quickly installed under the sink; the whole process will take only half an hour. Deep water purification is ensured by a high-quality six-stage filter with reverse osmosis. A mineralizer will supplement purified water with useful substances.

The granular carbon included in the filter has a branched surface. This extends its service life and promotes more efficient water purification.

BARRIER PROFI Osmo 100 Boost M

• Deep six-stage cleaning.
• Reliable plastic.
• Modest dimensions.
• Quickly purifies water.

• Slight noise during operation.

Atoll A-550 STD

The pre-filters installed in the model do an excellent job of retaining rust and chlorine. This helps to extend the service life of the membrane, since water that has already undergone preliminary purification reaches it.

The last stage of cleaning is located in front of the tap. A carbon post-filter is necessary in situations where purified water has been in the tank for some time. In this case, it acquires an unpleasant aftertaste. It is to eliminate this that a post-filter is provided. After purification through this filter, the water will be perfectly clean, which does not need to be boiled.

Atoll A-550 STD

• Easy installation and maintenance.
• High build quality.
• Possibility to install a cassette with mineralization.
• Stylish faucet.

• Heavy weight.

Prio New Water Expert Osmos MO530

The main advantage of this reverse osmosis water filter is its highly selective membrane. It will effectively purify water even at low pressure in the water supply.

The model purifies water from rust, pesticides, heavy metals, etc. The post-filter mineralizer enriches it with useful components. Replacing cartridges is as simple as possible thanks to the quick-release design of the fasteners. The product liner is made of non-toxic plastic.

Prio New Water Expert Osmos MO530

• Small size.
• Quiet operation.
• High quality Japanese membrane.
• The tank quickly fills with water.

• Low tap.

OMOIKIRI Pure Drop 2.1.4

The model is equipped with a modern thick-walled membrane made in Japan. It eliminates all bacteria contained in the water. The M-Complex 4 module enriches water with natural salts.

The modules contain Vivalon thread, which effectively traps toxic metals. The silver ions it contains prevent the proliferation of microorganisms. Changing modules takes just one minute and does not require the use of tools.

OMOIKIRI Pure Drop 2.1.4

• Compactness.
• Easy and quick replacement of modules.
• Works quietly.
• Contains innovative Vivalon thread with silver ions, which do not allow microorganisms to multiply.

• High price.

Barrier Profi Osmo 100

Don’t be surprised, but we have another standard model – now from Barrier. The latest current line of Profi Osmo with an index of 100, which indicates the use of a membrane with a capacity of up to 380 liters per day (100 gallons) as the default filter element. Those. where 1812-50 is usually installed, here 1812-100. The performance gain is approximately 2 times.

The model is available in versions with a pump (Boost), a mineralizer (M), and both (Boost M). All elements are attached to a durable steel frame.

The storage tank holds up to 4-5 liters of purified water. The useful volume, as in other systems of this type, directly depends on the pressure in the water supply: the higher, the better the potential of the capacity is realized.

Watch a short video about installing Barrier Profi Osmo to get an idea of ​​this filter.

The best reverse osmosis systems with mineralization option

Products that necessarily contain post-filters. Their main task is to fill purified water with essential microelements, improve taste characteristics and increase acidity levels.

Atoll A-575 Ep SailBoat

Products with a five-stage filter. The prefilter is able to retain solid and insoluble particles. The membrane becomes an obstacle to small elements of dirt. The water passes through the coal module, after which you can drink it and cook food with it. Performance indicator – 0.26 l/min. Minimum pressure – 2.8 atm. The case is not afraid of mechanical damage. The dimensions are small.

The average cost is 23,898 rubles.

Atoll A-575 Ep SailBoat

Advantages:

• compactness;
• ease of operation;
• durability;
• build quality;
• suitable for large families;
• presence of a separate tap.

Flaws:

• the price is not acceptable for everyone.

Geyser Allegro M

The device has a tap for two valves. I am ready to provide both enriched and demineralized water. Design parameters – 420*470*380 mm. If the pressure in the system exceeds 4 atm, thanks to a special valve, the excess flows into the drain. Tightness is achieved by double sealing the flasks. Withstands significant loads. The resource ranges from 1 to 3 years. Productivity – 0.14 l/min.

Specialized retail outlets offer products at a price of 8,440 rubles.

Geyser Allegro M

Advantages:

• long service life;
• compactness;
• faucet with two valves;
• tightness at height;
• functionality;
• versatility.

Flaws:

• It won't be possible to install quickly.

Barrier Profi Osmo 100 Boost M

The device is equipped with everything you need to start using it. The resource is significant - 5000 liters. The set contains keys for changing modules, gaskets, valve for connection, fittings and clamps. Filtration is carried out at a rate of 0.2 liters per minute. Withstands water temperatures of 35 degrees. Self-installation time is half an hour. No additional tools or accessories are needed.

The average cost is 18,040 rubles.

Barrier Profi Osmo 100 Boost M

Advantages:

• small parameters;
• installation speed;
• compactness;
• excellent equipment.

Flaws:

• Difficulties may arise during operation.

Aquaphor DWM – 101 S Morion

The design is compact and stable. It becomes easy to wash under the sink. The kit contains everything you need for setup. The case is equipped with shockproof protection, which has a positive effect on its service life. Productivity – 7.8 l/h. Withstands pressure up to 6.5 atm. Thanks to stable operation and a five-liter capacity, access to clean water is constant. It takes 1 minute to replace cartridges. No additional tools required.

The average price is 10,900 rubles.

Aquaphor DWM – 101 S Morion

Advantages:

• small sizes;
• stability of operation;
• full set;
• ease of installation;
• strength;

Flaws:

• The strength of the modules is not up to par.

Geyser Allegro

Allegro is a continuation of the successful Prestige line, but with some modifications. The manufacturer has focused on reducing the number of connections, which, logically, should reduce the risk of potential leaks. Therefore, the collector to which the prefilter flasks are attached is cast and made of plastic. There are versions on sale with a pump, a mineralizer, and the most complete one – with everything together. The kit includes a tank for 5-7 liters of purified water.

Previously, this model stood out with a transparent storage tank. There was a removable bag inside, allowing it to be changed as needed when microbial growth on its inner walls became apparent. But Geyser refused such a decision. Apparently something went wrong. For example, due to daylight, more germs developed inside than in a regular tank. Watch the video and you will understand what it looked like originally.

New water Expert Osmos MO530

This model will appeal to those who value compactness. The thickness of the main unit of the Expert Osmos MO530 filter is only 8.5 cm. It can be placed not only under the sink, but also above it or somewhere on the countertop. At the same time, it contains full 4 stages of purification with reverse osmosis and mineralization. All InLine cartridges can be changed in minutes. If necessary, they can be replaced with analogues from other manufacturers. A separate storage tank holds up to 7 liters of purified water.

As you will see from the video below, the MO530 used to come with a transparent storage tank. For the same reasons as in the case of Geyser Allegro, it was abandoned.

The operating principle of a reverse osmosis system

Regardless of the rating and the manufacturer, the product configuration is identical: replaceable special modules. The design features of reverse osmosis devices are practically the same. They have a standard set of filter elements, the service life of which ranges from 3 months to six months.

The following cleaning steps are provided:

• deferrization;
• rough;
• ultra-precise;
• water softening;
• postfilter – mineralizer.

The fine cleaning module operates according to the following principle:

1. An ultra-thin membrane separates the assembly.
2. Liquid under pressure enters the first compartment. The process of primary purification occurs.
3. Passing the second membrane, the liquid enters the second half.

Geyser Prestige 2

If your filter requirements are ultra-compact and affordable, then Geyser Prestige 2 is one of the few options. There will be a sacrifice in performance because the base 2-speed model comes without a tank. There is a modification with a 2-liter water tank and a post-filter.

The base model is equipped with a 100 gallon membrane. It is this that allows this reverse osmosis to be used as direct-flow osmosis. Depending on the pressure, the filter can deliver up to 200 ml per minute. This is not very convenient, but in some cases it is a good option.

The following video provides a short overview of the modification with a tank.

To be fair, I note that anyone can assemble such a system “on their knees” from components from any manufacturer. You just need an InLine cartridge with activated carbon (if the water is chlorinated) or polypropylene foam (if not chlorinated), a housing with a membrane, a plastic liner, a tap, a drain clamp and a tee tap. By the way, in this case you can even install a membrane with a higher capacity, up to 400 gallons. It will cost more, but the cleaning speed will increase 4 times.

Econic Osmos Stream

New water loves modular cartridges, which can be seen from the abundance of models of systems with inLine filter elements. They are easy to change, and if necessary, it is not a problem to replace them with analogues from other manufacturers. But in the Econic Osmos Stream system there was also a place for a special component in the form of a high-performance membrane of Japanese origin. It is capable of delivering up to 0.9 l/min at a water supply pressure of 5 atm, and at 8 atm. – all 1.5 l/min. The membrane cleans water so well that the concentrate and permeate are approximately the same. This is very cool!

In addition to the basic model OD310, there is OD320 - with a mineralizer and OD360 - with a pump and mineralizer. All of them are direct-flow, providing high quality cleaning at an enviable speed. The only thing is that the membrane for such systems costs almost the same as the entire kit.

Aquaphor DWM-31

DWM-31 combines the advantages of classic systems with a tank and direct-flow filters. The main advantage of this model is the use of a storage tank without internal pressure chambers and other things. Thanks to the included cut-off device, you can use 5-20 liter bottles. But for convenience, the kit includes a neat jug with a usable volume of 2.5 liters. It can always be washed, which eliminates the need for post-filters. Plus it saves space under the sink. Plus you can put it in the refrigerator. Plus there is a conditioning module with healthy salts.

What about the cons? Vendor lock-in, as always. Aquaphor cartridges are suitable here, and nothing more. See how it works in a visual video from the manufacturer.

Atoll A-550 box

If you want to see a minimum of tubes, look towards the boxed versions. Such as Atoll A-550 box. In it, all filter elements and the tank are hidden inside a plastic case. 4 of the 5 cleaning stages are represented by Inline type cartridges, i.e. If necessary, they can be replaced with products of third-party brands. The 1812-50 membrane is housed in a standard housing and delivers up to 120 liters per day or about 80 ml per minute.

The filter size is 440x420x240 mm, so the tank inside is also small. It can hold a maximum of 4.6 liters of purified water. There are versions with a pump. Modifications of the A-575 box with a 1812-75 membrane are produced in the same case, i.e. 1.5 times more productive compared to the younger version. You can find versions with a mineralizer and a pump.

The main advantage of such solutions: there are no protruding tubes, everything is hidden by plastic. On the other hand, you overpay for this plastic. At your leisure, try to calculate how much this overpayment will cost you if you assemble a similar system, but without a box. Let's save your time: about half the cost of the kit is the box. Half, Karl!

Atoll A – 550m STD

Water purified by this filter does not require additional boiling or other treatment. It is immediately suitable for consumption and cooking. 5 stages of purification allow you to obtain water that leaves no scale or residue and is completely safe for the body.

The system consists of 3 pre-filters, a reverse osmosis membrane and a mineralizer cartridge.

Pre-filters remove insoluble particles, chlorine and other contaminants larger than 1 micron from water, increasing the service life of the membrane:

• Pentair (Pentek) P5 - removes mechanical particles (sand, suspended matter, rust) larger than 5 microns;
• Pentair (Pentek) GAC-10 - removes chlorine and organochlorine compounds;
• Pentair (Pentek) P1 - removes small mechanical particles larger than 1 micron.

Passing through the mineralizer cartridge and post Atoll CK2586C, the water acquires a pleasant taste.

Atoll is a Russian brand that uses only the best materials of excellent quality. The FilmTec TW30-1812-50 membrane, manufactured in the USA, provides the highest degree of purification.

Interchangeable cartridges manufactured according to the Slimline-10 provide inexpensive system maintenance . However, the system is quite complex; not everyone can cope with replacing the cartridge.

This model is suitable for both residential premises and small offices. A universal model that everyone will appreciate.

We liked:

• Outlet water quality
• Availability of a mineralizer
• Good water pressure
• Large cartridge resource
• Big tank
• Inexpensive service

We didn't like:

• Large dimensions
• One tap included with a mineralizer
• Difficult cartridge replacement

Best deals:

*Prices are current as of 05/24/2021

Tips for choosing

As you can easily see, all systems are approximately the same: externally and in terms of cleaning quality. They may differ in design and ease of use, but the concept is the same everywhere. First, prefiltration to remove solid impurities and chlorine, then a reverse osmosis membrane to remove everything else, postfiltration to further purify the water after the tank, a mineralizer, etc. Read more about the sequence of cartridges in a separate article.

About the need to purchase

Reverse osmosis is really only needed in 3 cases:

1. The water contains nitrates - compounds that turn into toxic nitrites in the stomach. Only reverse osmosis and special expensive ion exchange resins can remove nitrates;
2. want to switch from bottled water to filtered water, because it’s more convenient and profitable. At the most rough estimates, clean water will cost half as much;
3. Tired of scale in the kettle and the need to frequently change softening cartridges in the flow filter

If this doesn’t apply to you, you shouldn’t spend money on such a system - something simpler, like a flow-through or filter jug, will help.

About the number of cleaning stages

Usually 4-5 steps are enough to get good quality water. Is it possible to do less? Easily! Below is a small life hack that will help you save some money.

Control yourself. Don't pay for unnecessary steps - this will not improve the quality of water purification!

So you bought a classic system, for example, Geyser Prestige. You use it, but 6 months pass - it’s time to change the pre-filters and post-filters. At the same time, you know for sure that the source water is not chlorinated. This is easy to understand by the absence of a specific smell.

Then you can throw out the 2nd and 3rd cartridges, and replace only the 1st and post-filter. Yes, you heard right, 2 flasks will be empty. Simply because their presence in a particular case does not make sense. Prefiltration will only include mechanical cleaning from sand, rust, etc. impurities insoluble in water.

About the storage tank

Most often, household reverse osmosis systems are equipped with 1812-50 GPD membranes. Their maximum output is 190 liters per day or approximately 130 ml per minute. We don't have the patience to wait 10-15 minutes for the kettle to fill, so we came up with storage tanks. These are intermediate containers that always have a supply of purified water.

You need to understand that no matter how clean the water after the membrane is, in a closed container it is simply doomed to become a medium for the development of bacteria. Therefore, there is a carbon post-filter that purifies the water after the storage tank. Therefore, manufacturers do not recommend leaving the filter idle for a long time. The tank will become rotten and will have to be washed with bleach to disinfect it. But this is the most pessimistic scenario. If you follow the manufacturer's recommendations, you don't have to worry about poisoning, etc. things.

But I still recommend considering options without intermediate containers (Prestige-2 or Econic Osmos Stream) or those where these containers can be easily washed, for example, a jug like in Aquaphor DWM-31 . In some cases, you don’t even have to sacrifice the speed of supply of purified water!

About water pressure

The bigger, the better. It's better to measure before purchasing. You can contact plumbers, filter installers, or do it yourself by screwing a pressure gauge to a flexible liner or shower hose.

A pressure of 3.5 atmospheres will allow any filter to reach its nominal performance. However, there are models that work with less pressure. As a last resort, you can install a pressure booster pump.

What is extremely important: the higher the pressure, the less water is drained into the sewer!

About the mineralizer

According to SanPiN 2.1.4.1074-01, the pH value of drinking water should be in the range of 6-9 units. But after reverse osmosis it can sometimes be below 6, which can be felt by the changed taste: the water seems bitter. To avoid this, use a mineralizer. It usually contains crushed calcite or dolomite - bad, but soluble minerals of natural origin.

Its use will only be noticeable to those who plan to drink raw purified water. For tea and coffee, a mineralizer does not make sense. Plus, you need to take into account that only the first portions of water will contain a noticeable amount of salts, because it was inside the mineralizer for some time, all the rest will contain much less due to the poor solubility of the filling.

About replacing cartridges

As practice shows, during the first replacement you can determine whether you need to follow the manufacturer's recommendations or whether you can save money. What are we talking about?

For example, servicing classic systems. We unscrew the pre-filter flasks and look at the condition of the cartridges. The first will be the element for mechanical cleaning. If it remains white or not very dirty, then the prefilters can NOT be CHANGED for longer than the regulated period. If it is covered in mucus and dirt, you may need to do this more often than recommended. The same goes for the rest of the steps - everything can be determined visually with sufficient accuracy.

Another thing is the post filter, if there is one. If a powerful shield in the form of a membrane is installed after the pre-filters, then after the post-filter the water goes directly to the consumer. Therefore, it is better to change it every 6 months. And if, for example, you went on vacation for a week, then upon arrival it is better to replace the post filter.

In modular systems, you can focus on changing the filtration speed. Cartridges will physically become clogged with impurities over time, which will directly affect their throughput.

About water consumption

It will increase. Do not believe in stories that due to the low filtration rate, the water meter does not record consumption. He records everything.

The flow rate will be proportional to the amount of permeate and drainage. And it depends on several factors:

• quality and condition of prefilters. The more contaminated they are, the worse the pressure and the more often the leaks of impurities that harm the membrane;
• quality and condition of the membrane. The more impurities the membrane cuts off, the more water will drain into the drain. The longer its service life, the more deposits on the material and the lower its throughput. Accordingly, more water will go into the sewer;
• pressure in the water supply. The higher it is, the less it will drain into the sewer;
• the presence of storage tanks. We are talking about pressurized air tanks because they create back pressure and reduce the efficiency of the system at medium and low pressure in the water supply

How to choose a reverse osmosis filter for an apartment

The main characteristic of the product is performance. Much depends on the needs of family members. For a full-fledged family of three to four people, a model that can process 5 liters of liquid per hour is suitable. The reliability of the design is also important. Operation involves various loads. The device must stand firmly on the surface or be properly secured. It is desirable that impact-resistant materials are used in manufacturing. Otherwise, damage to joints, leaks and other troubles cannot be avoided.

The rate at which liquid is collected depends on the following factors: the features of the device and the water pressure in the system. High pressure cleans faster. The recommended maintained pressure is 3.5 atm. Ease of use and ease of installation play a big role. The kit should consist of fasteners, fixing clips, and seals. This will allow you to mount the device yourself. If valves, membranes and modules are equipped with quick-release connections, this improves the process of their further operation and makes repairs simple and quick.

Reverse osmosis products are among the most common and effective. They have found wide application in the desalination of salt (sea) water and wastewater filtration. Indispensable assistants in medicine, food industry and other industries.

How to choose the right device? It is worth paying attention to the following characteristics:

1. Membrane porosity. The indicator affects the throughput and quality of cleaning. The optimal option is 1 micron. The average value is considered to be 3 microns, satisfactory – 5 microns.
2. Performance indicator. The starting point is a minute. The average value is from 80 to 250 ml. Manufacturers produce devices capable of passing through a flow of up to 1 liter. When using the product in everyday life, the indicator will not play a big role. When purchasing for cafes or restaurants, the value should be close to 1 liter per minute.
3. Storage tank volume. Its presence can improve poor performance. Capacity – from 4 to 12 liters. There is a rubber bulb with air inside. Helps increase fluid pressure when leaving the tap. As soon as the pressure weakens, additional filtered water enters the container. This container makes it possible for all family members to simultaneously use clean liquid even if the supply through the water supply system is turned off.
4. Lower pressure limit. A reverse osmosis membrane requires fluid to pass through at a certain pressure. If the indicator is lower, the quality of cleaning decreases. The indicator differs for different models. Devices are produced with a minimum value of 2.8 atm. Others require 3.5 atm. If your system cannot produce such an indicator, you should think about purchasing devices with pumps.
5. Appearance of the crane. Spouts can be equipped with one or two valves. The latter are produced single-lever or with rotation in different directions. In this case, you can choose one of the types of water: mineralized or filtered. If you are not going to drink mineralized liquid, opt for a faucet with one valve.
6. Options. This nuance is worth paying special attention to. If you miss the dimensions, installation problems will arise, since the product may not fit under the sink. Before you go to the store to make a purchase, you should measure the free space using a tape measure. It is worth choosing a model with suitable parameters.