The patented CCT (Cross Contamination Tester) heat exchanger testing kit is designed for in-plant testing of exchange surface integrity. One tester fits all heat exchangers and provides immediate pass/fail results. Plate & Frame heat exchangers are tested without disassembly. Holes or cracks in heat exchange surfaces can result in microbial contamination of food products. The CCT provides due diligence regarding HACCP, by routinely documenting tests of these critical process systems.