Method of detecting residual detergent and device for detecting residual detergent
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United States of America Patent
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Jun 7, 2011
Grant Date -
Dec 31, 2009
app pub date -
Dec 29, 2006
filing date -
Jan 6, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
It is intended to provide a method whereby residual detergent (surfactant) can be conveniently and accurately detected in the step of washing or rinsing dishes or clothes, and a test device usable in examining the rinsed conditions. Namely, a method characterized by comprising bringing a test substance with a composition (test agent) comprising an oxalic acid ester, a fluorescent substance, hydrogen peroxide and a strong acid and thus easily detecting the residual detergent sticking to the surface of the test subject from the chemiluminescence thus caused; and a test device which is most suitable for storing the test agent as described above.
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