... 50ml, dissolution and dilute with water to 100ml scale again, shake the can.2, poly aluminum ... easy addition of uniform.3, dosing scale seeking the best dosing the amount of dosing, and look at adjusting ... See fewer sedimentation tanks alum, and dark, the dosing volume is too small; As seen on sedimentation ... use should be made according to the quality scale, elect water purification effect is good, put ...