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公开(公告)号：US3738812A
公开(公告)日：1973-06-12
申请号：US3738812D
申请日：1971-07-27
Applicant: IONICS
CPC classification number: G01N31/164 , G01N35/00
Abstract: MEANS ARE PROVIDED TO COMPARE ELECTRICAL SIGNALS CORRESPONDING TO SAMPLE VOLUME, REAGENT CONCENTRATION AND REAGENT VOLUME TO PROVIDE A SIGNAL CORRESPONDING TO SAMPLE CONCENTRATION.
APPARATUS FOR MEASURINGG THE CONCENTRATION OF A SAMPLE SOLUTTION INCLUDING MEANS FOR MIXING REAGENT SOLUTION OF KNOWN CONCENTRATION WITH A KNOWN VOLUME OF SAMPLE SOLUTION. MEANS ARE INCLUDED TO PROVIDE AN ELECTRICAL SIGNAL CORRESPONDING TO THE INSTANEOUS CONCENTRATION OF A PARTICULAR ION OF THE SAMPLE-REAGENT MIXTURE. WHEN THE FIRST DERIVATIVE OF THE ELECTRICAL SIGNAL IS A MAXIMUM,
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