After 4 months, no white scale was seen, only yellow rust was left. Although there were still substances in the plate heat exchanger, they had been softened This cleint stopped using all additional chemicals and water softening equipment to treat their water as part of this 4 month test. Although there were still substances in the plate heat exchanger, it was soft and could be easily removed by manually. There are no more white mineral scales on teh heat exchanger plates, only yellow-brown impurities left.
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