The water purifiers we often talk about, that is, the most sold water purifiers on the market, mainly refer to the two categories of RO reverse osmosis water purifiers and ultrafiltration water purifiers. the sales volume of RO reverse osmosis water purifiers is much larger than that of ultrafiltration water purifiers.
There are 2 main differences between ultrafiltration water purifiers and RO reverse osmosis water purifiers.：
1: Does it need to be powered on?
2: Filtration accuracy
Besides, the filter membranes used in these two types of water purifiers are different.
The filtration accuracy of RO reverse osmosis water purifiers is about 0.0001 microns (one millionth of a hair), while the volume of bacteria and viruses is about 5,000 times. Only water molecules and some mineral ions can pass through, so it can achieve the effect of isolating viruses and bacteria.The advantage of reverse osmosis water purifiers is that they have high filtration accuracy and pure water can be drunk directly, but the general price is relatively expensive, and the annual RO membrane filter element is not cheap. It needs to be plugged in and waste water will be generated.
The filtration accuracy of ultraviolet water purifiers is about 0.01~0.1 microns. Generally, the diameter of bacteria is between 0.5-7 microns, and the diameter of calcium and magnesium ions that generate scale is about 0.0004 microns. Therefore, ultrafiltration water purifiers can filter out most bacteria, but some smaller bacteria, heavy metals, calcium and magnesium ions cannot be filtered out, so long-term direct drinking of water filtered out by ultrafiltration water purifiers is not recommended.The advantage of ultrafiltration water purifiers is that they are cheap, do not need to be plugged in, and do not produce wastewater. They are more suitable for areas where the water quality of tap water is not bad, or special areas where electricity cannot be plugged in.
Personally still agree with RO reverse osmosis water purifiers, the main reasons are as follows：
1 Reverse osmosis water purifiers cannot completely filter trace mineral elements, and at least 2% to 10% of trace elements are still retained.；
2 The acquisition of mineral elements is mainly obtained from vegetables, fruits, beef and mutton, etc., which fully meet the usual needs.
