An individual qualified and authorized by the compliant product manufacturer to provide specified care and maintenance to the product, and perform inspection, repair, and testing beyond the level classified as user repair
NFPA 1852 Standard on Selection, Care, and Maintenance of Open-Circuit Self-Contained Breathing Apparatus (SCBA), 2002 ed. https://www.nfpa.org/assets/files/AboutTheCodes/18 52/1852-F2007-ROP.pdf, (Std: Selection, Care, and Maintenance of Open-Circuit Self-Cont Breathing Aptus Self-Cont Breathing Aptus - Amer) {412 NFC}