A comment
I bought an apartment and slowly began to furnish it, so it came to the washing machine. I immediately decided that I would definitely put the cleaning filters on the washing machine as well. In the store I was offered to buy an Iceberg polyphosphate filter from Sanaks, which I did.
The filter turned out to be quite small, in length it was no more than 13-15 cm, and in diameter about 6 cm. I was a little embarrassed that the box did not contain instructions for the product, I did not really understand what this whole structure was made of.
The filter is made of transparent material, it can be seen that there are small 1 cm white balls inside it. It is they who collect all the muck, dirt, impurities, etc. in themselves.
The filter has a service life, as a rule, it is four hundred washings, so you need to carefully monitor its condition, otherwise it will be just a useless device.
pros
Water purification from impurities, the service life of the equipment increases.