remineralization filter cartridge

Remineralization filter cartridge – 1 simple thing to enhance your RO system water with trace minerals and higher pH value

What is a remineralization filter cartridge?

A remineralization filter cartridge is a filter filled with special materials that is designed to add healthy trace minerals back into reverse osmosis purified water and provide more tasteful and healthier drinking water.

Remineralization Filter Cartridge Main Benefits

  • Restoration of Essential Minerals

This filter cartridge brings back elements such as calcium, magnesium, and potassium to purified water. These minerals are important for our body’s functionality, contributing to better hydration and overall health.

  • Enhanced pH Balance

Another significant advantage is the restoration of pH levels. By bringing water to a balanced pH, this cartridge neutralizes acidity of reverse osmosis water, potentially reducing the harmful effects of acidic water on our body.

Drinking RO water – is it good for you?

While a reverse osmosis system removes harmful contaminants from water, like heavy metals, it also removes essential minerals too.

While these water filter systems are widely used in water treatment industry, they focus on removing contaminants and impurities from water, remineralization filters are designed to enhance the quality and taste of RO water by adding back some mineral content that is lost during the water purification process.

Remineralization filter
Classic reverse osmosis water filter provides high quality RO water

Although human body gets it’s minerals mainly from food, it is good to have them in your remineralized RO water too.

RO water is water that has been purified using an RO water filter system. RO water filter systems systems use a semi-permeable membrane to remove impurities and contaminants from water, and they are effective at producing high-quality pure water.

While RO water is generally safe to drink, it is important to note that RO systems can also remove beneficial minerals like calcium and magnesium from the pure water in the purification process.

Some people may prefer the taste of water that has been remineralized or had these minerals added back in, after undergoing filtration by an RO membrane.

It is always a good idea to check with a healthcare professional or water treatment expert if you have any concerns about the quality of your municipal water supply.

What are the Most Common Minerals Added Back to the Water?

  1. Calcium: Calcium is essential for maintaining healthy bones and teeth, as well as supporting muscle function and nerve transmission.
  2. Magnesium: Magnesium is crucial for maintaining normal muscle and nerve function, energy production, and bone health.
  3. Potassium: Potassium is essential for maintaining normal blood pressure, heart function, and muscle function.
  4. Sodium: Sodium is an essential mineral that plays a role in maintaining fluid balance, nerve transmission, and muscle function.
  5. Bicarbonates: Bicarbonates help to neutralize acidity in the water and can improve the taste.

These minerals can be added back to the water through various methods, such as using a remineralization filter, adding trace mineral drops or Himalayan sea salt, or using alkaline water pitchers or bottles.

Remineralization filters can help to restore the essential minerals lost during the purification process, such as reverse osmosis or distillation, and improve the overall health benefits and taste of the water.

Is a remineralization filter necessary?

After a reverse osmosis system the water is left without dissolved salts and minerals, either good or bad. This also makes the water have a specific taste.

The taste can be improved with a remineralizer and this is one of the reasons they are used. Health wise, remineralizer filter cartridges are not necessary, as all the minerals that a human body needs are taken through food.

Through water we only get a very small amount of useful minerals. So, remineralization filters are good, but not in any way necessary for drinking water.

What kind of remineralization filters are available?

There are a few different types of remineralization filters available on the market, each with its own unique set of features and benefits. One of the most popular types of a remineralization filter is the RO cartridge filter.

remineralizing filter cartridge
Remineralizing filter cartridge with ceramic and alkaline mineral balls

These filters use a semi-permeable membrane to remove impurities from water, but they also remove beneficial minerals like calcium and magnesium in the process. Remineralization filters can be added after RO membrane in RO systems to add back these essential minerals, improving the overall quality and taste of the purified water.

What are the benefits of a remineralization filter?

Remineralization filter gives better taste

There are several benefits to using a remineralization filter in your water filtration system. One of the main benefits is that it can improve the taste and quality of your purified water. Many people find that purified water tastes flat or bland, and a remineralizer can help to restore the natural minerals that give water its taste and improve its overall quality, like adding a small amount of calcium carbonate.

Remineralization filter for healthy minerals

Another benefit of remineralizers is that they can help to restore essential minerals that are lost during the purification process. These minerals, such as calcium, calcium carbonate, and magnesium, are important for human body by maintaining good health and are often found in natural sources of water.

By adding them back into purified water, you can ensure that you are getting the necessary minerals that a human body needs.

Remineralization water filter for pH value increase

In addition to improving the taste and quality of water, remineralization water filters can also help to make it more alkaline. High pH value water has a higher pH level than regular tap water, and drinking this type of water is believed to have a number of health benefits.

Some people claim that drinking alkaline water can help to neutralize the acid in the body, improve hydration, and even boost the immune system.

While the scientific evidence supporting these claims is limited, many people swear by the benefits of high pH level water and use remineralization filters to raise the pH level of their water.

remineralization filter cartridge
RO system with a remineralization filter cartridge

Remineralization filter cartridge for reverse osmosis systems

Most common are the remineralization water filters as a quick connect post filter. They are easy to add to any RO system. The filter has only two connections: inlet and outlet water.

It is installed right after the reverse osmosis membrane, the RO water permeate line that goes into the tank.

So, instead of an alkaline water pitcher you can upgrade your RO system with a remineralizer cartridge and make your RO water have a higher pH value and more essential minerals, with one additional cartridge.

It is important to note that while remineralizers can be a useful addition to your water filtration system, they are not a substitute for a high-quality water filtration system.

Remineralizers are designed to enhance the quality and taste of filtered water, not to remove contaminants or impurities. If you are concerned about the quality of your tap water, it is important to invest in a water filtration system that is capable of removing contaminants and impurities to ensure that you are getting clean, safe drinking water.

How remineralizing filters work?

Remineralizing filters work by adding back beneficial minerals, such as calcium, magnesium, and trace elements, to water that has been purified through a reverse osmosis (RO) filtration system.

This process helps increase the pH of the water to alkaline levels, typically pH 8, and improves its taste and odor. The remineralization filter is the final stage in an RO system and needs to be replaced around every six months.

While some remineralizing filters may not significantly increase mineral content, they are still recommended for restoring essential minerals lost during the reverse osmosis filtration process.

How to check if the remineralization filter works?

You can easily check the effects of the remineralization filter by checking the TDS value of water before and after the filter.

what is a tds meter

H&M Total Dissolved Solids / Conductivity Test Meter

This handy, portable meter is used by water quality professionals to test the effectiveness of your reverse osmosis filtration system.

Portable and handy TDS meter is a great water treatment test and effectiveness test of reverse osmosis house filtration systems. Advanced technology, easy use.

TDS meter features

  • Advanced microprocessor technology
  • Hold Function: saves measurements for record keeping
  • Auto-off function: shuts off automatically after 10 minutes of non-use to save batteries
  • Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a flashing ‘x10’ icon
  • LCD Display screen
  • Factory Calibrated. Easily recalibrated with a mini-screwdriver
  • Durable housing
  • TDS values chart affixed to rear of meter

How long do remineralization filters last?

There is no universal answer, but on drinking water reverse osmosis systems the recommendation is to replace the remineralization cartridge during every second regular service. This means once a year.

The lifespan of a remineralization filter depends on a variety of factors, including the type of remineralizer being used, the quality of the filtered water, and the amount of water that flows through the filter.

Some types of remineralizers, such as those that use media like calcite or Corosex filter media to add minerals back into the water, may last for several months or even years before they need to be replaced.

Other types of remineralization filters, such as those that use cartridges or filters that need to be replaced on a regular basis, may need to be replaced more frequently, typically every few months or so.

Where Should be a Remineralizing Cartridge be Installed

If we talk about a remineralizer on the reverse osmosis system, it should be installed right after the post carbon filter, when the purified water goes into the tank.

This will make the flow through the filter cartridge lower, so the water has more contact time with the filter’s media, and it has time to dissolve the needed minerals.


In conclusion, a remineralization cartridge filter is a type of water filter that is designed to add minerals back into filtered drinking water and provide healthy water, with good taste for drinking.

These filters can improve the taste and quality of water, restore essential trace minerals that are lost during the reverse osmosis purification process, and even make it more alkaline.

While remineralization filters can be a useful addition to your water filtration system, they are not a a substitute for a high-quality water filtration systems.

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Remineralization filter cartridge - 1 simple thing to enhance your RO system water with trace minerals and higher pH value 13

Who am I?

I am working as a water treatment technical manager and I have more than 25 years of practical experience in water purification.

Water purification expert

After many years of experience in water purification, I want to share some of my knowledge and get people to know the real importance of water quality.

Water purification and water treatment are very complex themes, so it is important to explain them in an easy-to-read way.

On this blog, you will find many understandable, easy-to-read information about water purification.

I hope you enjoy it, find some useful information, and thank You for reading.

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