FERROXYL TEST (ASTM A380 and A967)
Potassium Ferricyanide - Nitric Acid Test.
Test for detecting trace amounts of iron on the surface of austenitic stainless steel (AISI SERIES 300).
Ferroxyl test is a highly sensitive test for detecting traces of free iron or
iron oxides on the surface of stainless steel.
ASTM A380 (Standard Practice for Cleaning, Descaling and passivation of Stainless Steel Parts, Equipment and Systems.)
ASTM A967 Standard Specification for chemical passivation treatments for stainless steel parts.