RO and Alkaline water purifiers are popular choices among users today. Although both are water purifiers, they have differences. Let's compare RO and Alkaline water purifiers in the article below!
Comparing RO and Alkaline Water Purifiers
1. What is an RO Water Purifier?
RO water purifiers were first manufactured in 1960 in the United States. Since then, RO water purification technology has been widely used not only in the US but also in many countries worldwide. The incoming water, after passing through coarse filters, is rid of large-sized impurities. Subsequently, the water is filtered through the RO membrane to completely remove contaminants. Some types of water purifiers are equipped with functional filter cores, where water filtered through the membrane flows through these functional cores to supplement beneficial substances for health. RO water purifiers are now chosen and equipped by many families for their living spaces. These products have the ability to filter out 99.99% of impurities in water and provide clean water for users.

SimpleHome's RO water purifier
2. Features of RO Water Purifiers
- Can filter various types of incoming water such as tap water, river water, well water, rainwater, and others.
- The system of filters combined with the RO membrane of the machine helps thoroughly eliminate bacteria and heavy metals in water.
- Produces safe and pure water to effectively meet the water needs of users.
- Wastewater from RO water purifiers can be reused for various domestic purposes.
- Some modern RO water purifiers are equipped with additional functional cores to provide water beneficial for users' health.
3. What is Alkaline Ion Water Purifier?
Alkaline Ion Water Purifier was introduced in 1952 in Japan. The product utilizes water electrolysis technology to produce various types of water. The incoming water passes through fine filter cores to produce pure water, which is then electrolyzed into alkaline and slightly acidic water with different pH levels. Electrolysis technology helps retain natural minerals in water beneficial for health, neutralize stomach acid, prevent and support various diseases.

Panasonic Alkaline Ion Water Purifier
4. Features of Alkaline Ion Water Purifier
- Purifies water for direct consumption without boiling.
- The electrode plate is made of precious materials, corrosion-resistant, and has good conductivity, ensuring the health of users.
- Provides good alkaline ion water for health, improves digestion, and prevents some diseases for the body.
- Filters water from various sources with different pH levels depending on the intended use.
- Generates alkaline ion water capable of neutralizing acidity in the body, preventing aging. Creates alkaline water and various types of water rich in natural minerals.
5. Comparison table of RO and Alkaline water purifiers


6. Which Water Filter Should You Buy: RO or Ionizer?
Based on the comparison criteria shown in the table above, both RO and Ionizer water filters provide clean water for users. However, each type of water filter has its own advantages. Therefore, to choose between these two types of water filters, users need to consider their usage needs.
If you want to buy a water filter to purify water for daily use, then an RO water filter is suitable. Conversely, if you want water to be supplemented with minerals and balanced pH, you can choose an ionizer water filter.
7. Recommended Bestselling Models of RO and Ionizer Water Filters on Mytour
7.1. A. O. Smith AR75-A-S-2 RO Water Filter
The product measures 26 x 41 x 42 cm (W x D x H) with a 9-liter tank. It's a under-counter water purifier, made of plastic, featuring an elegant design with a compact and convenient glass casing. It can be easily installed on the kitchen counter or under the sink for convenient water access. The device is equipped with an LED display that provides complete information for easy monitoring.

The A.O. Smith AR75-A-S-2 RO Water Filter is easy to install
The A.O. Smith water purifier model AR75-A-S-2 utilizes RO - Side Stream technology: Significantly reduces wastewater, with a pure water ratio of 1:1, and extends the lifespan of the filter membrane up to 3 years. Additionally, the device integrates a new generation electronic monitoring system to track and alert the operating status of the water purifier, ensuring stable operation and providing your family with the purest water.

The A.O. Smith AR75-A-S-2 has a total power of 25W
The A.O. Smith AR75-A-S-2 comprises 5 filter cores, with a filtration capacity of 11.8 liters per hour and a total power of 25W. The product features an automatic RO membrane flushing function. Additionally, the water purifier is equipped with an electromagnetic valve and an electronic water faucet with convenient filter replacement warning display.
7.2. Sanaky Slim VH-101HP Water Purifier
The Sanaky floor-standing water purifier is manufactured in Vietnam. Its slim and compact design allows for installation in any location. The toughened glass front panel and door ensure scratch and impact resistance during transportation. The elegant and sturdy aluminum trim adds a touch of sophistication. The knobs and water faucet are entirely made of stainless steel, ensuring safety for users, including children.

The Sanaky Slim VH-101HP Floor-standing Water Purifier
The Sanaky VH-101HP water purifier integrates 11 new-generation water filter cores, including:
- Filter Core 1: PP (Sediment Filter)
- Filter Core 2: G.A.C (Granular Activated Carbon)
- Filter Core 3: PP1M (Sediment Filter)
- Core 4: RO (Reverse Osmosis Element)
- Core 5: Nano Carbon
- Core 6: (Mineral Stone)
- Core 7: (Alkaline)
- Core 8: (Bio Ceramic)
- Core 9: (Hydrogen)
- Core 10: (T33 G.A.C)
- Core 11: (Nano Silver Plus)

Sanaky Slim VH-101HP filters 15 - 20 liters per hour
Sanaky Slim VH-101HP measures 32 x 42 x 100 cm, with a maximum tank capacity of 10 liters and a usable capacity of 6 liters of regular water. The filtration capacity of the product is 15 - 20 liters per hour. The water purifier continuously filters clean water to effectively meet users' needs.
Above are the comparison information of RO and Ion alkaline water purifiers. Hopefully, this article provides you with useful knowledge, enabling users to have more options when purchasing water purifiers for their families.
