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Arrangement at measurement of PH or another chemical property detectable by dye indicators

Research output: PatentScientific


Original languageEnglish
Patent numberUS 6208423 B1
IPCG01N21/55, G01N21/78, G01N21/80
Priority date19/06/98
Publication statusPublished - 27 Mar 2001
Externally publishedYes
Publication typeH1 Granted patent


The invention relates to an arrangement at measurement of pH or another chemical property detectable by dye indicators, the arrangement comprising a glass sheet or a similar substrate to be immersed into a solution to be measured, the substrate being coated with a dye film arranged to change its colour when a chemical property of the environment changes, and means for leading light through the substrate to the dye film.