Mirasan® Grün hydrochloric-acid-free tank cleaner, 20 kg

Mirasan® Grün is a hydrochloric-acid-free cleaning agent for drinking water tanks, particularly suitable for stainless steel installations, supplied in a 20 kg single-use plastic canister. Where a drinking water tank contains a large number of stainless steel fittings, Mirasan® Grün should always be used. Mirasan® Grün is DVGW W319 tested; it is a cleaning agent for commercial and industrial use.

Ingredients: non-ionic surfactants below 5 %, inorganic and organic acids, glycolic acid, phosphoric acid 10 to 25 %, corrosion inhibitors and auxiliaries; hydrochloric acid is not contained. The product also contains sulphamic acid. The label bears the test marks “DVGW W319 geprüft” (DVGW W319 tested) and “ofi geprüft” (ofi tested).

Application

• Preparation: rinse sludge and sand off the floor of the emptied tank with a water hose, remove larger quantities manually and rinse again with water. If necessary, close the residual drain afterwards so that the cleaning solution and the rinse water can be neutralised.
• Initial cleaning: use Mirasan® Grün undiluted; for particularly old or stubborn encrustations, repeat the cleaning or use Mirasan® TWR locally.
• Follow-up cleaning: diluted with water at a ratio of up to 1:20.
• Application: apply to walls and floor with the Miramat low-pressure sprayer; with a telescopic spray lance, work is carried out from the floor and no scaffolding is required.
• Contact time: approx. 10 to 15 minutes, then rinse off the deposits with a normal water jet.
• Rinsing check: proper washing-out can only be verified via the pH value, which should match the original value of the drinking water (± 0.2).

Post-treatment

• Thoroughly rinse all surfaces that have come into contact with the product; insufficient rinsing entails a risk of microbial contamination of the tank contents.
• To wash down the walls, use 150 to 200 l of water per kg of Mirasan® Grün.
• Before discharging the rinse water collected in the sump into a receiving watercourse or the sewer system, check its pH value and, if necessary, adjust it to approx. pH 7 with the Mirasan® Neutraliser.
• If required, disinfect all surfaces including the ceiling with Huwa-San, particularly after conversion work and microbial contamination.
• Then fill the tank with a few centimetres of water and drain it slowly, refill it and take a water sample; a sample of the inflow water is also recommended.

Compatibility and safety notes

• Suitable for use on linings and approved coatings for drinking water installations such as concrete, epoxy resin, tiles, paint coatings, chlorinated rubber and PVC coatings, provided these are resistant to acidic products.
• Galvanised parts must not be treated.
• Do not bring into contact or process together with chlorine or chlorine-containing products (release of chlorine gas).
• Where the resistance of the building materials to acidic products is unknown, the user must carry out their own trials; improper use can damage the building fabric.
• Operational safety is only ensured if the application instructions are followed and the product is handled properly by trained personnel; protective equipment and handling in accordance with the safety data sheet.

Container and storage

Supplied in a 20 kg single-use plastic canister. Store frost-free, protect from direct sunlight, do not store together with alkalis and observe local regulations on the storage of chemicals.

Complementary products

• Mirasan® TWR: acidic specialist cleaner for heavy deposits, for local use on particularly old or stubborn encrustations.
• Ferro Plus: additive for iron and manganese deposits; dissolve in 5 kg of water and add to the stock solution to obtain 25 kg of ready-to-use solution, which must be used within 2 to 3 days.
• Miramat: low-pressure sprayer for application.
• Mirasan® Neutraliser with pH strips: for adjusting the rinse water to approx. pH 7.

Manufacturer: Schermann GmbH, Fischamend, Austria.

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