... , reddish brown granule/FlakePAC use precautions, and dosage1, according to the different raw water conditions, can do small trial first ... dose. For ease of calculation, configuration test solution by weight (w/w), with 2~5% distribution as well.. With 3% solution: ... , ventilation, shade, and do not damp. How to use1, use should be made according to the quality scale, elect water purification effect ...