Stabilised Chlorine Granules

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Up to 100kg - £ 0.98 delivery 3 days
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Stabilised chlorine granules are a form of fine-grade chlorine that dissolves quickly and is simple to apply. They contain Sodium Dichloroisocyanurate, a granular chlorine sanitiser which is used for both pools and spas. Stabilised chlorine granules do not hydrolyse into chloramines, can reduce organic matter, and help keep your water clear. They can be used for routine sanitation for all pools and shock treatments for pools on the smaller side.

Please find the product specification HERE

Please find MSDS HERE

Dosing Instructions (Pool):

·        To increase the free chlorine by 1 part per million add one scoop (100 grams) per 50 cubic metres (10,000 gallons).

·        For a shock dose, add 750 grams per 10,000 gallons. Please note this might need to be doubled or even trebled in the presence of algae.

·        Dissolve granules in warm water in a plastic bucket to create a pre-mixed solution. This can be spread throughout your pool or poured into it using either a skimming basket or strainer.

·        If using a feeder or dispenser, ensure that the granules used previously are the same chemical (Sodium Dichloroisocyanurate). If another material has been used, wash the feeder out thoroughly before adding granules.

·        Maintain a chlorine level of 1 to 3 ppm and a pH level of 7.2-7.4 in your pool. It’s recommended that you test your pool water regularly to ensure chlorine saturation and the alkalinity of the pool are within safe limits.

Dosing Instructions (Spa):

·        To increase the free chlorine by 2.5 parts per million add 5 grams (a teaspoon). Note: On average you should need approx. 1 teaspoon per person using the spa.

·        Maintain a chlorine level of 2 to 4 ppm and a pH level of 7.0-7.6 in your spa. Testing the waters of your spa every so often ensures that the level of chlorine isn’t excessive, and that the alkalinity isn’t outside of usual parameters.


Where a spill has occurred in a confined space or an unventilated building and the material is damp and evolving chlorine, the rate of chlorine evolution can be reduced by covering the thinly spread solid with soda ash. Store in a cool, dry place away from light, avoiding exposure to moisture. Keep out of reach of children. 


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