发明名称 |
High sensitivity test system for the colorimetric determination of specific gravity or total dissolved solids in aqueous samples |
摘要 |
A highly sensitive and convenient test method, composition and device for the facile calorimetric determination of total dissolved solids in an aqueous sample having a low specific gravity is presented. The reagent composition comprises the mixture of a complex of a positively charged polyelectrolyte and a negatively charged indicator material, and an appropriate buffer system for maintaining the test system environment at an exact pH depending upon the indicator material selected. A preferable embodiment of this test system comprises the incorporation of the test composition into or with a solid state matrix material such as bibulous paper. The test system is particularly useful in the field testing of potable and recreational waters.
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申请公布号 |
US6638480(B2) |
申请公布日期 |
2003.10.28 |
申请号 |
US20000729157 |
申请日期 |
2000.12.01 |
申请人 |
ENVIRONMENTAL TEST SYSTEMS, INC. |
发明人 |
EVTODIENKO IOURI VLADIMIROVICH;MAKOWSKI EUGENIA;MORRIS DAVID A. N. |
分类号 |
G01N31/22;G01N33/52;(IPC1-7):G01N33/00 |
主分类号 |
G01N31/22 |
代理机构 |
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地址 |
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