Much has been learned over a short period of time with respect to the corrosion assessment of
small medical implant devices. Laboratory testing started with modifications of ASTM G 5 and G 61,
which lead to the development of ASTM F 2129, and thence the fine-tuning of that specification to meet
the intent of the FDA Guideline for non-clinical tests. The changes in electrochemical testing protocol
with time are reviewed. Comparative data is presented addressing test environments, scan rates,
statistical replication, alloy response, and acceptance criteria.