Scott Safety’s ACS represents a major advancement in SCBA. It is significantly lighter than any other carrying system and offers the wearer the ultimate in comfort and flexibility. The result is considerably reduced user burden combined with the highest standards of performance.Scott Safety has provided the highest standards in the design and manufacture of Respiratory Protection Equipment for over 75 years. Developed after considerable research and investment the new Advanced Carrying System, ACS, is set to become the industry standard carrier for SCBA in the industrial and fire environments. The Sigma ACSm is designed specifically as a Type 1, SCBA set for use in industrial environments.