MACS 609 Certification Practice Exam 2025 – Your Comprehensive Test Prep Flash Cards

Question: 1 / 400

What is the status of using ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system?

?

Approved by some vehicle manufacturers but not by others

Next
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy