Descaling powder benefits

DESCALING POWDER

Is a very effective, sulphamic acid-based cleaning agent that comes with a unique film-forming inhibitor to guard against acid attack on copper, brass, mild steel, and stainless steel. The inhibitor increases the acid's potency by acting as a penetrant and dispersion.

To remove limescale (calcium carbonate) buildup in boilers, calorifiers, and heat exchangers, use DESCALING POWDER.

DESCALING POWDER shouldn't be applied to surfaces made of aluminium or galvanised steel.

How to Apply

Depending on the scale level. Typically, carbonate deposits can be removed with a 10% solution (100g per litre). At temperatures below 70oC, solutions of up to 30% may be used to remove tenacious deposits. 250 ml of the inhibitor solution should be applied for every 25 kg of powder.

Periodic pH or acidity tests should be used to assess when descaling is complete. When descaling is finished, pH or acidity should remain consistent. More descaling powder solution should be added if the solution doesn't exhibit any acidity or if the pH increases to 4 or higher.

Equipment should be completely cleansed and drained after descaling, and any acid effluent should be neutralised with Alkbuild or Neutralizing Powder.

Acid washing Calorifiers or heat exchangers

For every 100 litres of water in the circuit, add 5 kg of descaler at first. As the acid and calcium carbonate combine in this way, foaming is typically the result.

Once the foam has subsided, the scale has either nearly all responded or the cleaning solution has lost some of its effectiveness. Take a sample of the cleaning solution and do an acid concentration test to verify this. For every 100 litres of water in the circuit, add an additional 2.5 kg of DESCALING POWDER if the acid concentration test shows a low concentration.

The system should be allowed to cycle for an hour after the addition of acid has stopped producing foam before being flushed and neutralised.

Prior to being disposed of in the sewer, the effluent needs to be neutralised with either Alkbuild or Neutralizing Powder to a pH of between 6 and 9.