... wide range of PH value, does not cause harm to equipment, a great water purifier, clears up SS, COD ... drinking water, waste water, and industrial water.UsageMethods on how to use Pac is as following :1: add the solid ... the percentage of 1:3, then dilute it to whatever concentration you desire with 10-30 times the ... raw water, decide the best quantity of Pac to put into the water, when the turbidness of ...