1. Look at the filter element: it is enough to filter impurities first (high-end reserve minerals; The lower end can filter larger microorganisms without retaining minerals)
Secondly, it is enough to filter the odor (all activated carbon can be used; The difference is powder or honeycomb activated carbon; The same price difference 100 times)
Finally-can you kill microorganisms (high-end will be sterilized with ultraviolet light; Not at the low end)
2. Look at the installation: generally-the pipeline will be changed (installed on the water pipe, under the stage or on the stage, non-professionals can not install it themselves, and clean water and tap water are used separately).
Part-no need to change the pipeline (use a diverter valve to divert the water faucet to the valve, which is convenient to install, mostly desktop).
3. Readability: prompt-prompt the service life of the filter element (there is no prompt at the low end, and the user estimates it himself; High-end template indicator light reminds whether to replace the filter element)
Replacement-is it convenient to replace the filter element (low-end ones are often difficult to replace themselves; High-end users can easily replace the filter element)
4. Look at the consumption: the waste water generated in the process of water purification (the waste water generated at the low end is more than 1:3, and the standards are different, which is very wasteful; The waste interest of 1:3 is generated in the middle end, which also increases the use cost invisibly; The high-end water purifier does not need to produce waste water, which greatly saves the cost)
Note: The heavy metal elements in the "wastewater" discharged from the purifier often exceed the standard, so the clothes will become hard when washed with water;
Used to mop the floor, the floor tiles are damaged;
Even flushing the toilet is not allowed, which will corrode ceramics;
Not to mention washing vegetables.
5. Look at word of mouth: Any water purifier that says it doesn't need to replace the filter element is fooling you. If you don't believe me, I'll show you his explanation. It must be marked with the replacement time.
6. Look at technology: the more patented technologies, the more advanced (patent protection period: 20 years for invention patents, and 10 year for utility model patents and designs from the date of application).
7. Look at the sales volume: A good salesperson will introduce the water purifier sold to you in detail, instead of blindly advocating it.