#HULL CELL COPPER CATHODE HOW TO#

#HULL CELL COPPER CATHODE HOW TO#

For the newcomer however the problem is how to establish the large number of necessary standards of comparison for which ideally one should take each plating solution in use and investigate the effects of altering each and every parameter-major and minor constituents, impurities and operating conditions-in small steps both singly and in combination. In the course of time most users of the Hull cell will accumulate a 'considerable amount of comparative data. What it does require however is skilled interpretation of the test panels obtained, comparisons being made with panels plated in solutions of known composition and purity and under known conditions. The Hull cell thus provides an extremely valuable plating control test. The hydrometer checks on the chromic acid while the Hull cell determines the catalyst ratio and impurity level. Yet with its aid much can be learnt about the composition and characteristics of a plating solution a chromium plating bath, for example, can be controlled and maintained by using only a hydrometer and a Hull cell. The apparatus required is simple and inexpensive, the test takes only a few minutes to perform and does not require a particularly skilled operator. I N R E c EN T years the Hull cell has come to be recognised as a most important tool in the control testing of electroplating and related solutions.

This book, or parts thereof, may not be reproduced in any form without the previous written permission of the publishers This edited English translation © Robert Draper Ltd 1966Īll rights reserved. The investigation of electroplating and related solutions with the aid of THE HULL CELL

Hull cell copper cathode