... , golden yellow, tawny, reddish brown granule/FlakePAC use precautions, and dosage1, according to the different raw water conditions, can do small ... and dark, the dosing volume is too small; As seen on sedimentation alum and, cloud high, the dose should be adjusted ... , ventilation, shade, and do not damp. How to use1, use should be made according to the quality scale, elect water purification effect is ...