Pro-STN (STATION)

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pH and temperature measurement included as standard in all

models.

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Compatible with all our systems.

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Easy-to-read alphanumerical display.

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Includes probes, holders, standards and all other necessary

components.

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3-year warranty.

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Easy to install in all types of swimming pool.

For your further comfort, all of the models are equipped with

detachable touch screens, connected via a cable or through Wi-

Fi, so you may control the water’s parameters without even

leaving your home.

Over 15 different models that constantly maintain the water

healthy, clean and crystal clear, with no work and no hassles.

Over 20 different models which guarantee the safety of

swimmers and the environment, at a minimal cost.

OPERATING PRINCIPLES

SALINE ELECTROLYSIS

The traditional water treatment method for swimming pools essentially

consists of adding chlorine in any of its commercially available forms.

SALINE ELECTROLYSIS SYSTEMS bring a new concept in water

treatment to your swimming pool, providing improved water quality,

eliminating the need to handle chemical products and simplifying

maintenance tasks, as it generates chlorine directly from the salt

already dissolved in the water. The salt it requires to operate should be

added to the pool at a concentration of 4 - 6 kg/m3 (5 - 6 times less

than that of sea water). The system adds the salt to the water and

produces chlorine (Cl2) at the anode of the electrolytic cell via the

following electrolysis reaction:

2NaCl + 2H2O = 2NaOH + H2 + Cl2 (salt + water = sodium hydroxide

+ hydrogen + chlorine)

The chlorine dissolves in the water to form hypochlorous acid:

Cl2 + H2O = HOCl + HCl (chlorine + water = hypochlorous acid +

hydrochloric acid)

Hypochlorous acid oxidizes bacteria present in the water. As can be

appreciated below, it also generates another product, active oxygen

(O2), which adds further disinfection capacity to the process by

sterilizing the water:

2HOCl = 2HCl + O2 (hypochlorous acid = hydrochloric acid + oxygen)

Once the water is disinfected, the hydrochloric acid reacts with the

sodium hydroxide in what is called a neutralization reaction, reverting

back to salt and water. The hydrogen and oxygen atoms react to form

water:

NaOH + HCl = NaCl + H2O (sodium hydroxide + hydrochloric acid =

salt + water)

The system, therefore, is a closed process in which none of the

products are consumed. Salt only needs to be added to the water

once, when the pool is first filled. Afterwards, small amounts should

occasionally be added to replenish the salt lost with the water when

cleaning the filters.

Chlorine generated by the electrolysis process destroys organic matter

and pathogens in the water, before finally transforming back into

sodium chloride (common salt).

Which explains why the salt concentration remains practically constant.

SUGAR VALLEY brands based on the operating principles of saline

electrolysis: HIDROLIFE, BIONET.