Can epoxy liner integrity test?

[gitchegumee]

We've had a few pinhole leaks in our cans. Enough to raise alarms. The cans have been stored for a few years, but in a clean environment. As I understand it, testing is done at manufacture with a high-speed dielectric test as proxy for can liner integrity. Anybody know of a field test we can use to test empty cans? Thanks for any help!

[DorchesterQC]

ASBC Cans 8- Copper Sulfate Test

"This method determines whether there are any exposed metal surfaces on the interior of containers coated with a polymer material. It is designed primarily for the testing of aluminum cans and ends coated with internal coating (IC), but it can be used for containers made with other metals such as steel. A galvanic reaction occurs when the copper from the copper sulfate is deposited on the surface in locations where the surface is not covered with IC. This method detects potential pinholes and pores in the IC or places where the container may contain improper coverage of the IC on the interior."

[gitchegumee]

Great! Appreciate the help. That was what I was looking for. Thank you!

[Dheeraj]

You can also check enamel rating for metal exposure. It is pretty quick and fast with a bench top setup.

Thanks

[gitchegumee]

Thanks for that Dheeraj!