I’m writing validation documents for a tablet press. logically I should have a stainless steel certificate of the tablet press. But because the machine is very old no certificate was available. My question is, how should I continue? If i don’t have the document, I can’t prove that the machine is from stainless steel and thus would the validation documents not be complete.
You can done it by testing Acid testing is one test that will separate 304 and 316 grades of stainless steel.:- Sulphuric acid strongly attacks 304 grade, producing green crystals and a dark surface, but its attack on 316 grade is slow and produces a brown surface Hydrochloric acid attacks 304 grade very rapidly and produces gas, but attacks 316 grade only very slowly.
Moly Kit: Consist of Molybdenum test solution and electrode.
Pour drop of Molybdenum soln in product contact surface
Place carbon electrode in electrolyte soln
put other electrode in specimen surface
if dark red colour persist for 60 sec then its SS 316, if less than 30 its 304
if black-202 grade
Thanks