Why has the use of halide torches in leak detection decreased in popularity?

A) It does not work with most modern refrigerants. B) It has been banned by many states.
C) It is a very expensive method. D) It has harmful environmental implications.


A

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Which of the following refrigerants is not considered a drop-in replacement for the other?

a. HFC-410A for HCFC-22 b. HCFC-409A for CFC-12 c. HFC-407C for HCFC-22 d. HCFC-123 for CFC-11

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