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%