Hercules Chemical Co.’s cryo-tek -100/AL for aluminum anti-freeze is now listed by ECR International as compatible with all of ECR’s aluminum high-efficiency gas-fired water boilers for commercial buildings. ECR features boilers under the brand names of Argo, Dunkirk, Pennco and Utica Boilers. The Hercules cryo-tek is available at plumbing wholesalers nationwide through OateySCS.

Hercules Chemical.www.herchem.com.  Circle 26