How to choose an economical and efficient water purifier;
Look at the filter element: the core component of the water purifier, which directly affects the purification index of the water purifier.
Filtration membrane: the market is also full of various brand-name filtration membranes, pp cotton and so on; In fact, the function is only to filter impurities above a certain specification.
Reverse osmosis: the most common in the market, and the filtration rate of 99% has become its biggest selling point; The disadvantage is also obvious that it is too clean (there are no minerals beneficial to the human body; And cannot filter microorganisms such as bacteria and viruses).
Look at the installation: whether the water purifier is convenient to install directly affects your future use (is it convenient to move? Can I install it myself? The simpler the installation, the more convenient the maintenance).
Look at consumption: wastewater-the water purifier using reverse osmosis technology will produce wastewater in the process of water purification, and the heavy metal elements in wastewater often exceed the standard by several times or ten times, so washing clothes with discharged wastewater will make clothes hard; Used to mop the floor, the floor tiles are damaged; Even flushing the toilet is not allowed, which will corrode ceramics; Washing vegetables is even more impossible; Therefore, the production of waste water greatly increases the use cost.
Easy to see: Whether it is convenient to use the water purifier is also an important indicator to determine the quality of a water purifier.
Look at word of mouth: Through the above understanding, you should have a very clear understanding of the purchase of water purifiers. Therefore, any water purifier that says that there is no need to replace the filter element is fooling you. If you don't believe me, let him read the instruction manual, which will definitely indicate the replacement time of the filter element. For an untrustworthy company, the product quality will not be so good.
Look at technology: the technology here refers to world-class patents (not everyone in the market can use it, everyone is using it)
Protection period of patented technology: 20 years for invention patents, and 10 year for utility model patents and designs from the date of application. During this period, others have no right to use it. If the protection expires, they can apply to the patent applicant or unit for authorization and pay the fee (about 30 years later, everyone will use the technology, and this time it will be free). So the technology that everyone is using in the market can be regarded as outdated technology.
Look at sales: A good salesperson will introduce the water purifier he sells in detail, as well as the comparison with other similar products, the performance advantages and disadvantages of various devices, rather than blindly advocating his own products.