Mett-Bio Metallurgical Testing & Services an ISO 17025:2005 accredited by NABLis fostering its industry-leading reputation for being the dominant firm in Metallurgical and Corrosion Testing as per NACE/ASTM /ISO Standards. Mett-Bio Is pleased to offer Cyclic Corrosion Testing (CCT)services as per ASTM G 85. · Cyclic Corrosion Test (CCT)