What verification is required for recovery equipment?

The correct answer is that recovery equipment must be certified by an EPA-approved testing laboratory. This certification ensures that the equipment meets specific performance standards set by the Environmental Protection Agency, which is critical for ensuring safety and environmental protection when handling refrigerants. The EPA's approval signifies that the recovery equipment has undergone rigorous testing to confirm its efficiency in recovering refrigerants, thus minimizing their release into the atmosphere and addressing environmental concerns related to ozone depletion and global warming.

In contrast, while options referring to CSA approval or specific manufacturing dates may relate to safety or design considerations, they do not specifically address the requirement for equipment verification by the EPA. The focus is on the necessity for reliable recovery equipment to be verified for compliance with environmental regulations as overseen by an appropriate authority.