THE corrosion of metals group of the Chemical Research Laboratory has recently been concerned with cheaper and more easily operated methods of testing the corrosion resistance of metals and the protective value of different types of coating. In this connection the ‘C.R.L. beaker‐test apparatus’ has been extensively used, and the Institute of Petroleum has approved it as a means of evaluating protective grease preparations and the temporary protection afforded by light oils. The apparatus has also been modified to test the extent of attack by marine and industrial atmospheres.
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