The first thing to be sure to use the kind of ion polyacrylamide, the proportion of the use of aqueous solution configuration, or home test. Under normal circum
May be the color of copper sulfate. Before the treatment of wastewater, the impurities cover the color, poly aluminum, polyacrylamide flocculation sedimentation
A lot of words can also use woven bags (PE, PP), etc., PE sample bag is better. If a small amount of glassware can be used
You may choose the wrong agent, PAC and PAM are many models, the corresponding use is not the same, er
Polyaluminium chloride Shelf life is two years, after expiration is also available, it has acidic corrosive, there will be some harm to plants