The Serinus 57 TRS measures TRS in ambient air with the use of the HTO1000 external converter. The design of this analyzer is based 35 years’ worth of knowledge and experience gained from the operation of large air quality monitoring networks. The instrument integrates smoothly into monitoring networks. It’s based on the design of the Serinus 50, which has the approvals of US EPA, Australian Standard, and EN. Versatile interfacing is made possible with USB technology, analogue, Bluetooth, RS-232, and optional TCP/IP.