|Brief description: || |
A smoothed, polished and degreased copper strip is dipped into a sample container containing the fluid for investigation. When greases are investigated, the copper strip is smeared with the grease on every side and is then placed in a sample bottle containing the same grease. The closed sample bottle is then stored for a certain amount of time in a warming bath. Once the test period has finished, the copper strip is removed, cleaned with solvent and dried carefully.
The level of corrosion at the end of the experiment is ascertained by comparing the copper strip with a colour scale. The result is placed in one of four main categories (1-4) and, within these, two to five sub-categories (a-e).