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[交流] 求助:请问wako公司pvsk溶液的浓度

买了wako公司的聚乙烯硫酸钾溶液用于胶体滴定,但是却发现看不懂标识,没找到它的溶液浓度或是阴离子浓度,结果不会用。。。
不知哪位虫虫知道的,请赐教,不胜感激,谢谢!

商品信息具体如下:

Potassium Polyvinyl Sulfate Titration Solution (N/400) <-这个是指聚合度吗?

Wako

Cat. No. 164-21655Grade: for Colloidal Titration
Storage condition: Keep at RT.
Manufacturer: Wako

Summary
        
The only normal solution for anion colloidal titration. It is used for the quantitative determination of cation high-molecular compounds by direct titration and for the quantitative determination of agar, mucin and high-molecular flocculants through combined use of glycol chitosan solution, which is a cation colloidal titration solution.
Appearance:  Colorless - slightly yellowish brown, clear liquid
Synonym N/400 P.V.S.-K
Potassium Polyvinyl Sulfate
Polyvinylsulfuric acid potassium salt
Poly Vinyl Sulfate, Potassium Salt
Potassium Poly(vinylsulfate)
Sulfuric acid, monovinyl ester, polymers, potassium salt
Polyvinyl sulfate potassium salt
Potassium poly(vinyl sulfate)
PVSK
Sulfuric acid, monoethenyl ester, homopolymer, potassium salt
CAS NO. 26837-42-3
Molecular Weight (162.21)n
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