Clearly identify specific ammonia system components, such as a swing compressor, and protect workers from exposures using two-part IIAR SWC ammonia pipe markers. These pressure-sensitive vinyl pipe labels exceed the ANSI A13.1 pipe marking standard that is the preferred presentation for system components carrying toxic contents, such as ammonia. The labels also comply with IIAR Bulletin No. 114 that matches the broader standard for marking ammonia system components.