One of the criteria: look at the qualification.
The Chinese people **** and the State Ministry of Health Health Supervision Center clearly issued: the supervision and management of drinking water sanitation, which article 21 clearly pointed out:
So all the Ministry of Health involved in the issuance of health permits issued by the Ministry of Health are "unlicensed to drive" the product is not protected by law.
Specific query please enter the health administrative license public inquiry
Standard two: look at the material.
Modern people decorate the waterway remodeling know to buy pipes, fittings to buy a good, after the installation but also a pressure to try the water. Why? Fear of running water. Water and fire, this is a vital thing.
So the second thing to look at when choosing water treatment equipment is the tank material.
The third criterion: the function.
Choose water treatment equipment to first clarify their purpose, first of all, from the big concept of ordinary water purification or water softening. Ordinary water purification is to remove sediment in the water, impurities, bacteria, heavy metals, residual chlorine, organic matter, and some minerals. Water softening is to remove calcium and magnesium ions from the water, the most direct way to say is scale.
General water softening only need to use cationic resin can complete the ion exchange, remove calcium and magnesium ions. Softened water has the advantage of cleaning the skin, washing clothes soft and smooth, protecting the water heater and faucet, the shower is not blocked by scale, and the sink is no longer water stains. However, it should be noted that, precisely because of its removal of calcium and magnesium in the water, long-term consumption of softened water will cause the human body lack of calcium and magnesium. Therefore, in addition to the hardness of the water to reach very hard and very hard standards, should be used as a drinking water softener treatment equipment. Water softener is a wise choice for life water treatment equipment.
Ordinary water purification is different from water softening, need to use a lot of different filter media, in order to achieve the intended purification requirements. Each filter media can play a different role in purification, how to reasonably match the composition of the filter media by the key.