发明名称 |
A CHLORINE ANALYTICAL TEST ELEMENT AND A STABILIZED N,N-DIETHYL-P-PHENYLENEDIAMINE SOLUTION |
摘要 |
A test element (10) used to determine concentration levels of free and total chlorine in a water sample comprises a test pad (12) adhered to a substrate (14), wherein the test pad (12) is impregnated with a stabilized DPD solution. The test pad (12) is color responsive to different concentration levels of chlorine in the water and compared to a color chart to determine the level of free chlorine and/or total chlorine in the water. The stabilized DPD solution may include N,N-diethyl-p-phenylenediamine oxalate salt, a polymeric anhydride such as a methyl-vinyl anhydride and an organo-sulfate such as dimethylsulfone. |
申请公布号 |
CA2920471(A1) |
申请公布日期 |
2015.02.19 |
申请号 |
CA20142920471 |
申请日期 |
2014.06.20 |
申请人 |
HACH COMPANY |
发明人 |
ISMAIL, IBRAHIM;HERTEL, MATTHEW;SWANSON, TERESA L. |
分类号 |
G01N31/22;G01N33/18 |
主分类号 |
G01N31/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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