Content This specification covers the test procedure for producing environmentally related corrosive atmospheres to determine the reaction of plated or unplated surfaces when exposed to different concentrations of flowing gas mixtures12. Description Samples that are to be evaluated may be mated or unmated connectors@ components@ or experimental materials. They are placed in an environmentally controlled chamber that is monitored by algas analyzing system for controlled concentrations of the gas mixture. Corrosion rates are monitored by copper and@ unless otherwise specified@ silver@ control coupons placed in the chamber for each test. These control coupons are removed and analyzed using coulometric reduction for factors related to amount and type of corrosive product growth to confirm corrosivity control level. Methods are based upon those developed by W.H.Abbott@ Battell Columbus Laboratories@ for the Environmental Studies Group. Safety This procedure involves the use of hazardous materials@ operations@ and equipment. This specification does not purport to address all of the safety problems associated with its use. It is the responsibility of whoever used this specification to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1 W.H. Abott@ The Development and Performance Characteristics of Mixed Flowing Gas Test Environments@ Electrical Contacts - 1987@ Proceedings of the Thirty-Third IEEE Holm Conference on Electrical Contacts@ IEEE@ New York@1987@ pp67-78. 2 D.W.Rice et al.@ Atmospheric Corrosion of Copper and Silver@ J.Electrochem. Soc.@ 128@1981@ pp 275-284.