TRIO-HARDNESS CONTROL; It is a liquid product used to precipitate calcium and magnesium hardness in low and high pressure boiler waters and to provide phosphate control. With the dosing of TRIO-HARDNESS CONTROL, the calcium and magnesium salts in the boiler water are converted into non-adhesive and soft sludge and taken out of the boiler with the help of blowdown. TRIOHARDNESS CONTROL is a sodium phosphate derivative and can be used with TRIO-ALKALINITY CONTROL. By providing a temperature of 40-50° C, a scale of TRIO-HARDNESS CONTROL is added to 20 scales of distilled water (condensate, distilled water, etc.) to dissolve and the prepared solution is prepared for dosing into the system.