This lecture will explain some of the concepts discussed on the core section of the EPA Section 608 CFC Refrigerant Handling Exam. Ozone, Chlorine, CFC, HCFC, HFC, the three R's (Recovery, Recycle & Reclaim) and safety are discussed. This is one of a series of videos designed to help students understand the purpose of questions and answers on the exam not just memorize the answers. If you watch this video as well as the others then you should be more prepared to obtain the Universal Refrigerant Handling Section 608 Certification for HVAC technicians.