Ultrasonic Cleaning Coins - Case Study

Customers Criteria: Free from all contamination
Component: Coins
Material: Copper plated steel, Cupronickel (copper-nickel)
Contamination prior to cleaning: Oxidation
Total number off: 4
Number off per run: 1

Ultrasonic Cleaner Cleaning Agent Temperature(s) Concentration
Kemet 12 Ultrasonic Cleaner Rodastel 30 45°C 5%
Kemet 12 De-ionised water 40°C 100%
Versa 120 Dryer N/A 65°C N/A

Process for cleaning coins:

The coin was placed in the tank and run for a cycle of 5 minutes, after a quick inspection you can see the coin has brightened up and the majority of the oxidation has been removed. The coin was cleaned for a further 5 minutes, Then placed in the rinse tank for 3 minutes to ensure a thorough clean removing any debris and left on cleaning agent that could stain or etch the coin. Finally the coin was dried using a hot air dryer set at 65°C for 5 minutes. Note: Both coins were processed separately with the exact same process above.

% Satisfactorily Cleaned: 100%

Before cleaning Coins

Before cleaning coin

Before cleaning coin

After cleaning Coins

after cleaning coin

after cleaning cupronickel

kemet ISO 9001

BSI number Q05919

Over 85 years of service to industry

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