You can purchase the exam through the ESCO Institute or other approved certifying organizations. The exam fee (which is per examination and includes all four sections of the test) is typically around $25 for online testing through schools or approved proctors.
This section is for technicians who service hermetically sealed equipment (containing 5 lbs or less of refrigerant). It covers: Epa Section 608 Preparatory Manual 9th Edition V2 Pdf
The manual defines the hierarchy of refrigerant processing: You can purchase the exam through the ESCO
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