Q: We have insect and proteinaceous residues we are looking to remove from an aluminum drum.  We know Tergazyme is the “go-to” for such things but we seem to get aluminum chelate blush.  Can you recommend something different? A:  A chelate blush is a white crusty irregular deposit of aluminum edetate, a reaction between the aluminum and the chelating agent in some Alconox … [Read more...] about Removing Protein Residues from Aluminum: Avoiding Chelate Blush