At least two dozen companies supplying more than a hundred different filters to the market are fighting for the right to purify water from all kinds of pollutants. But which ones are really reliable and of high quality?
Instructions
Step 1
The main disadvantage of small water filters is the miniature size of the cartridges. Activated carbon is able to remove harmful impurities only if it is in contact with water for more than ten minutes. The performance of an average cartridge for 100 grams of water in 10 minutes. Obviously, few people are attracted to this cleaning speed.
Step 2
The resource of such products is 300-500 liters, which is also not very much. If you filter in less than ten minutes, then all pollutants will not leave the water and there will be little sense from such a filter. In addition, cartridges for such filters need to be replaced every month. Such models are worthy of attention only for out-of-town trips, where not a large volume is important, but the purity of the water. For example, if you take water from questionable sources.
Step 3
If you want to purify water really with high quality, then pay attention to stationary filters from companies such as Atoll, Barrier, Aquaphor, Geyser. They attach directly to the water pipe and provide filtered water immediately. As a rule, such filters are connected to a separate tap, which is installed next to the main one. Another plus of such models is a large resource (up to 10,000 liters).
Step 4
The most common type of stationary filters are passive multistage models. The most popular are the products of the companies "Aquaphor" and "Geyser", and they differ mainly in size, resource and filtration rate. As a rule, they have no more than three stages of cleaning, each of which works according to its own technology.
Step 5
Perhaps the best option is reverse osmosis filters (mainly Atoll). Their price is within 10,000 rubles. Previously, such filters were used to make drinking water out of sea water. Today they are more often used commercially. Almost all the water sold in stores is passed through reverse osmosis filters.
Step 6
The principle of operation of this device is that water is passed through a special membrane with the help of a strong pump. The pore size of this membrane is extremely small, so that only water molecules can pass through it, and all harmful impurities are flushed down the drain. The downside is that together with beneficial bacteria, salts that a person needs are removed from the water.
Step 7
The most expensive are active stationary filters, which are mainly manufactured by Eco-Atom. Their cost reaches 13,000 rubles. In addition to the usual passive cleaning, such filters perform additional processing. For example, treatment with ultraviolet light, which allows you to kill up to 99% of harmful bacteria.
