Salt for the dishwasher: what is it for? Where and how much to pour?


If you are among those who have acquired a dish­wash­er, then you know that spe­cial tools are required for its prop­er oper­a­tion: pow­der, rinse aid and salt. With the appoint­ment of the first two means, every­thing is very clear, but the need for salt for the dish­wash­er remains to be dealt with.

The purpose of salt in the dishwasher

In fact, salt for PMM is the same table salt with the well-known for­mu­la NaCl. But why then it is impos­si­ble to use one prod­uct both for food and for domes­tic pur­pos­es? The fact is that for PMM, salt is used with a high degree of purifi­ca­tion, with­out addi­tion­al impu­ri­ties and addi­tives. Dish­wash­ing salt gran­ules are much larg­er than those of food salt. If you pour ordi­nary salt into the dish­wash­er, the fil­ters will clog very quick­ly and the equip­ment will become faulty.

What is dishwasher salt for?

Have you noticed scale and lime smudges on plumb­ing and house­hold appli­ances that come into con­tact with water (ket­tle or humid­i­fi­er)? They are formed due to the fact that the water that enters our apart­ments and hous­es is hard. The dish­es inside the machine are washed with the same water. Salt is used to soft­en water.

How does salt soften water in PMM?

This process takes place as fol­lows:

  • salt enters a spe­cial com­part­ment — an ion exchang­er, where the resin is locat­ed;
  • when water enters the machine, the resin beads remove cal­ci­um and mag­ne­sium ions from it;
  • the removal process can only take place when there are enough sodi­um ions in the resin, which are tak­en from the salt;
  • thus the water soft­ens.

Dishwasher salt

Why is it necessary to reduce the hardness of water?

It is known that in soft water the process of clean­ing dish­es is bet­ter. In addi­tion, scale does not form on the heat­ing ele­ment, which can lead to break­age.

When using salt on the dish­es after wash­ing, whitish stains and plaque will not remain.

Where and how much salt to pour into the dishwasher?

At the bot­tom of each PMM there is a spe­cial com­part­ment for salt. This is a tank with a screw cap. Sprin­kle salt into it as need­ed. In order not to scat­ter any­thing, it is bet­ter to do this with a fun­nel.

Most PMMs have a built-in sen­sor that lights up when the salt in the tank has run out.

The required amount of salt depends on the degree of water hard­ness, and usu­al­ly ranges from 500 g to 1 kg.

There are three ways to deter­mine how hard water is:

  1. With the help of a spe­cial test strip.
  2. With the help of the host soaps and rags (if a wet rag lath­ers poor­ly, then the water is hard).
  3. View the results of chem­i­cal analy­sis of water by region.

If salt is poured into the PMM for the first time, then first you need to pour water into the com­part­ment.

Each time you refill the tank with salt, it will already be filled with water. When pour­ing, excess water will go through the pipes.

The fol­low­ing video clear­ly demon­strates how, where and how much salt should be poured into the dish­wash­er:

Salt for PMM from the best manufacturers

Salts for dish­wash­ers are pro­duced by the same man­u­fac­tur­ers that pro­duce tablets and rins­es. Ide­al­ly, it is advis­able to buy all dish­wash­ing deter­gents of the same brand. Let’s take a look at some of the ones on the mar­ket.

Finish Calgonite

  • pack weight — 1.5 kg
  • price — 200–250 rubles.
  • man­u­fac­tur­er — Aus­tria

Coarse white salt. Sold in a card­board box. Salt in a bag inside.

Somat (Henkel)

  • pack weight — 1.5 kg
  • price — 90–120 rubles.
  • man­u­fac­tur­er — Ger­many

Pack­ag­ing — card­board box, has a con­ve­nient retractable spout. Salt is bright white in col­or, fine in struc­ture.


  • pack weight — 2 kg
  • price — 380–450 rubles.
  • man­u­fac­tur­er — Ger­many

Sold in a soft paper bag. It con­tains only nat­ur­al evap­o­rat­ed salt. Cer­ti­fied by Eco­Cert and EcoG­a­ran­tee.

Kristall-fix (Oricont)

  • pack weight — 1 kg
  • price — 320–380 rubles.
  • man­u­fac­tur­er — Ger­many

Pro­duced in a tall plas­tic bot­tle with a neck through which it is con­ve­nient to pour the prod­uct into the PMM. Salt light, medi­um grind­ing.

Popular dishwasher salt


  • pack weight — 1.5 kg
  • price — 190–250 rubles.
  • man­u­fac­tur­er — UK

Salt is sold both gran­u­lar (coarse­ly ground) and in the form of tablets. Tablets cost 150–200 rubles. expen­sive.


  • pack weight — 2.5 kg
  • price — 850–900 rubles.
  • man­u­fac­tur­er — France

Con­cen­trat­ed white salt tablets. Free of dyes, fra­grances and phos­phates.

What can replace salt

The prices for most salts for PMM are not bud­getary. There­fore, the ques­tion often aris­es whether it is pos­si­ble to replace gran­u­lat­ed spe­cial salt with some­thing. Let’s con­sid­er sev­er­al options.

food salt

It is not rec­om­mend­ed to use edi­ble salt for PMM. Yes, its com­po­si­tion is almost iden­ti­cal to indus­tri­al salt, the same sodi­um and chlo­rine. But besides this, the salt that we eat con­tains var­i­ous impu­ri­ties: iodine, iron, cal­ci­um, etc. With con­stant use, these addi­tives will set­tle in the ion exchang­er and lead to a break­down of the machine.

If you still decide to use edi­ble salt instead of spe­cial salt, then the only pos­si­ble option is Extra salt, which does not have addi­tives.

Salt tablets

This is the same spe­cial salt, only in a dif­fer­ent form of release — in the form of tablets. They are com­plete­ly safe for PMM. They are small in size and are also laid in spe­cial. machine com­part­ment.

Salt tablets for the dishwasher

3 layer tablets

3‑in‑1 tablets are a prod­uct that includes deter­gent com­po­nents, rinse aid, and salt. Each lay­er dis­solves at a cer­tain stage of wash­ing dish­es. Salt dis­solves in them at the very begin­ning at the stage of heat­ing water. It is pos­si­ble to use such tablets with­out pour­ing salt into the tank if the water hard­ness lev­el is below aver­age.

In order for the dish­wash­er to work prop­er­ly and serve you for many years, be sure to use salt. One pack is enough for approx­i­mate­ly 9–12 months of use, so you should not save on this prod­uct. Using good salt is not only a guar­an­tee of no machine break­downs, but clean dish­es every day.






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