APPARATUS FOR CLEANING A MERCURY-DROPPING ELECTRODE OF A THROUGH-FLOW POLAROGRAPHIC ANALYZER

摘要

Solid impurities that accumulate on the mercury dropping electrode of a polarographic analyzer are periodically dissolved by washing with a suitable solvent at prescribed intervals such intervals are chosen to be less than the time necessary for such accumulation to become sufficient to adversely affect the polarographic current during the continuous measurement, in the analyzer, of a test liquid containing such impurities. The solvent is introduced into the analyzer through an input port separate from that used to introduce the test liquid. The washing is accomplished by flowing the solvent over the electrode without immersing it in the solvent.