Recovery & RecyclingQuestion 237 of 240

The primary reason recovery cylinders are color-coded gray with a yellow top is to:

a.Show the cylinder is empty
b.Mark the cylinder for disposal
c.Indicate the refrigerant is flammable
d.Mark it as recovered refrigerant

Explanation

The gray body and yellow shoulder identify a container as a recovery cylinder holding used or mixed refrigerant, keeping it visually separate from color-coded virgin refrigerant containers. This reduces the chance of accidentally charging a system with contaminated refrigerant. The color does not indicate empty, flammable, or disposal status.

This topic, taught in full in the EPA Section 608 Certification guide. EPA 608 Universal Study Guide (2026) — Core + Type I/II/III, with the 2027 A2L update — PDF + EPUB, $14.99 · 14-day refund →

Practice all 240 questions free — no signup required.

Own the complete EPA Section 608 Certification guide — PDF + EPUB, $14.99 →

Related questions on this topic

Last reviewed: · editorial process

PrepPass team · Verified against EPA Section 608 Technician Certification Exam · How we review
Report