HIGHHSPEED POTENTIAL DIFFERENCE TITRATION UNIT

摘要

PURPOSE:To make it possible to complete titration in a short time by obtaining an equivalent point by operations after measuring titration points in a range of titration rate 50 to 90% before the equivalent point several times. CONSTITUTION:Titration vessel 1 is provided with indication electrode a and reference electrode b, and a detected potential is sent to micro computer 4 through amplifier 2 and A/D converter 3. Titration liquid is dropped by driving burette 6 by micro computer 4. Micro computer 4 forecasts an equivalent point several times on a basis of the potential in sample solution and determines a dropping quantity for the next step each time titration liquid is dropped and derermines a proper dropping quantity so that the titration point may be in a range of 50 to 90%, for example, titration rates 50, 70, 80 and 90% may be took in order, and the equivalent point is calculated by the linear plot method on a basis of the titration liquid quantity at each titration point and data of the potential.