13. Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold?
ANS ARI-700
14. What type of recovery devices are so named because they depend on components of
the system; that is, they capture refrigerant with the assistance of components in the air
conditioning or refrigeration equipment as they are emptying.
ANS System dependent
15. All devices used for refrigerant recovery must meet what standards?
ANS EPA
16. What is one HCFC?
ANS R-22
17. Refrigerants that contain no chlorine at all are called?
ANS HFCs
18. CH2FCF3 refrigerant is a?
ANS HFC
19. Ozone in the stratosphere consist of molecules containing how many oxygen
atoms?
ANS 3
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