National standard color coated aluminum coil standard

1, color coated aluminum coil in the process of processing need to carry out a thorough inspection. In order to make each part more accurate, meet the product standards, and for the normal discharge of sewage, the detection of metal ions in the water after production is often needed. The following is a brief introduction to the detection of metal ions in color coated aluminum coil water.
2, the content of Na cation in the color coated aluminum coil is calculated according to the measured amount of alkali. Phenolphthalein was used as color developing agent and titrated with HCl standard solution until the bright red faded. Hydrogenation is calculated based on the amount of HCl consumed. And then figure out the potassium content. The content of nickel positive ion was selected from ammonia substance of sodium citrate. The OD value was determined by dimethyl ethyl dioxime at 450nm. The content was calculated by pure nickel.
3, if you have suggestions for the research and development of color coated aluminum coil, you will find that the production of aluminum coil to go through a series of processing, the process will produce a lot of sewage, hinder water because it contains a large number of metal ions, harmful to some people, only after special treatment can be discharged.
The key points we list are helpful to the "color coated aluminum coil detection method and industry standard national color coated aluminum coil standard" key issues, if there are such cases we do not list for color coated aluminum coil, you can refer to our national standard color coated aluminum coil standard, can effectively compare, find out the focus of the problem of color coated aluminum coil. In addition, it is recommended to pay attention to the key principle of equivalence and equivalence. Want to purchase high quality color coated aluminum rolls, this suggestion is the so-called core point of the problem.