Eine neue Apparatur zur kontinuierlichen Titration

The sample of a process stream is mixed with the indicator. Then—while being stirred—it is pumped continuously through a channel in a block of transparent material where the titration solution is added through a slit or a row of narrow holes ranging over the entire length of the channel. The end of the titration is marked by a very distinct change of colour, indicating by its position the concentration of the process stream.