G - Physics – 01 – N
Patent
G - Physics
01
N
324/3
G01N 27/02 (2006.01)
Patent
CA 1256493
ABSTRACT OF THE DISCLOSURE Apparatus for calibrating a conductivity instrument having a conductivity cell and d conductivity measuring instrument operatively associated with the conductivity cell, includes a conduit for supplying high purity water to be measured; a first flow line for supplying the high purity water from the conduit to the conductivity cell; a second flow line for supplying the high purity water from the conduit to the conductivity cell; a mixed bed ion exchanger in the second flow line for de-ionizing the high purity water flowing through the second flow line; and a valve which selectively supplies the high purity water to the conductivity cell, from either the first flow line to provide a conductivity measurement of the high purity water or the second flow line to calibrate the conductivity cell.
537584
Beckman Industrial Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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