Prevent the chances of deadly ammonia exposure and protect employees with five-part Pump Out ammonia pipe markers. Outfit your facility's refrigeration system with Pump Out, or PO ammonia pipe markers to convey important information about pipe contents and associated hazards. These pressure-sensitive vinyl pipe labels exceed the ANSI A13.1 pipe marking standard that is the preferred presentation for pipes carrying toxic contents, such as ammonia. These labels also comply with IIAR Bulletin No. 114 that matches the broader standard for ammonia pipe marking.