The shop is CLOSED for the weekend due to staff illness. Monday's class will run as usual and the shop will reopen for it's regular hours on Tuesday, February 7th.
Standard sodium bisulfate compound is mixed with warm water for effective cleaning and pickling for precious and non-ferrous metals. Works best at 125 F (52 C). Long-lasting, easy-to-use, and a safe replacement for dangerous sulphuric acid.