Cyanuric Acid

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Acide cyanurique 1Kg

Acide cyanurique. 1 kg. dans un pot en plastique. Empêche la «combustion» du chlore par la dure lumière du soleil tropicale.

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Il suffit de TRES PETITES QUANTITES.Un additif indispensable lors de l'utilisation de systèmes de chloration à l'eau salée ou de chlore en liquide (doseurs ORP).

Cyanuric Acid (CYA) 

VOUS AVEZ BESOIN DE TRES PETITES QUANTITÉS De CYA.

Comme guide approximatif, Pour une piscine de 200 000 litres (200 m3), par exemple une piscine de 10 x 20 mètres, 6 Kg de CYA suffiraient à augmenter le niveau de CYA de 0 à 50 ppm. le CYA ne se gaspille pas - sa seule perte réside dans le lavage à contre-courant et la forte dilution de l'eau par rapport à la pluie.

Une piscine domestique de taille moyenne de 4 x 10 m, une profondeur moyenne de 1 m et une utilisation d'un chlorateur d'eau salée nécessiteraient 1 Kg de CYA pour augmenter le CYA de 0 à 30 ppm

 

FAQ

Q: Do I need cyanuric acid?

A: Generally, most chlorine products for pools are marketed as T.C.C.A (trichlorisocyanuric acid), that is, they already contain Cyanuric Acid. While this is true for chlorine powder, granules and tablets, saltwater chlorination systems DO NOT produce cyanuric acid and to reduce the load on a chlorinator it should be used. Here in the tropics, however, the sun is very fierce, and in many situations, many pools may benefit from careful addition of Cyanuric Acid. 

Q: What does cyanuric acid do?

A: Cyanuric acid forms a weak bond with free chlorine in the pool water, protecting it from the sun’s ultraviolet rays to reduce chlorine loss. Properly managed, cyanuric acid has been shown to reduce the amount of chlorine needed to maintain the minimum chlorine residual in an outdoor pool. In a small pool with a moderate bather load, cyanuric acid can significantly reduce the cost for chemical disinfection.

Q: How much cyanuric acid should be used in a swimming pool?

A: Chemical suppliers recommend that the optimal range for cyanuric acid is 30-50 ppm.  Other sources recommend about 20 ppm for a good cost- to-benefit ratio. At levels above 50 ppm, pools reach the point of diminishing returns where the reduction in chlorine effectiveness and cost of buying cyanuric acid outweighs the benefits.

 

Q: How does one test for cyanuric acid?

A: Any pool operator who uses cyanuric acid or stabilized chlorine should purchase a test kit capable of measuring cyanuric acid and understand how to use it properly.  Cyanuric acid level should be tested at least once a week. Click here for details of our Cyanuric Acid testers.

Further reading for the technically minded

Factors Affecting the Cyanuric Acid Concentration in Swimming Pools (PDF dowload