Hi! As a standard we use 0.05% - 0.2% Disodium EDTA in our products as a chelator. We have a few products with no viscosity (room sprays and toners specifically) where we have noticed tiny pieces/floaties forming during the accelerated stability process. We had the floaties analysed by a lab and they were found to be mainly copper and a small amount of tin. Is it possible that the Disodium EDTA is causing this to precipitate out of the water? We use De-ionized water - do we even need a chelator?