Standard 1: look at qualifications.

The Health Supervision Center of the Ministry of Health of the People's Republic of China has clearly issued: Measures for the Supervision and Administration of Drinking Water Sanitation, in which Article 21 clearly states: Therefore, all products without a health permit issued by the Ministry of Health are classified as "unlicensed driving". not protected by law.

Standard 2: Look at the material.

Modern people know that they need to buy pipes and fittings for waterway renovation. After installation, they need to test the water. Why? Afraid of running into the water. Relentless, this is a vital thing. So the second thing to look at when choosing water treatment equipment is the tank material.

Standard 3: fixed function.

When choosing water treatment equipment, you must first clarify your purpose. First of all, from the big concept, whether you want ordinary purified water or softened water. Ordinary water purification is to remove sediment, impurities, bacteria, heavy metals, residual chlorine, organic matter, and some minerals in the water. Demineralized water is to remove calcium and magnesium ions in water, which is the most direct scale. Generally, demineralized water only needs to use cation resin to complete ion exchange to remove calcium and magnesium ions. The softened water has the advantages of cleaning the skin, washing clothes soft and smooth, protecting the water heater and faucet, the shower is not blocked by limescale, and the sink is no longer water stained. However, it should be noted that it is precisely because it removes calcium and magnesium from the water that drinking softened water for a long time will cause calcium and magnesium deficiency in the human body. Therefore, water softeners should be used as drinking water treatment equipment unless the water hardness reaches a very hard and extremely hard standard. It is a wise choice to use a water softener as a domestic water treatment equipment. Ordinary purified water is different from softened water. It needs to be used comprehensively with many different filter materials in order to achieve the predetermined purification requirements. Each filter material can play a different role in purification, and how to reasonably match the composition of the filter material is the key.