Reflects current leak rate thresholds for commercial refrigeration and industrial process refrigeration (IPR).

Alternatively, use this exact search string in Google: "EPA 608 Preparatory Manual" "9th Edition" "V2" filetype:pdf

To earn Universal Certification—which allows you to work on any type of equipment—you must pass all four sections for a total of 100 multiple-choice questions. Once earned, your certification never expires.

Awarded to technicians who successfully pass all four sections (Core, Type I, Type II, and Type III). Core Section: Environmental Science and Regulations