The boiler anti-scaling agent should be used according to the hardness of the boiler's water supply. Generally, it can be used according to the following requirements.
1. If the water supply hardness is less than 2 meq/L, add anti-scaling agent 50/ton water.
2. For each 2 milliequivalent/liter increase in water hardness, the dosage is increased by 35 g/ton of water.
3. If the hardness of the water supply is not clear, add more according to the above principles.