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

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