The Serinus 44 Model is a Ammonia analyzer developed by Ecotech. It is design to provide precise and reliable performance at excellent value. The system is mainly used to measure NO, NO2, NOx and NH3 in ambient air using proven chemiluminescence technology and external thermal catalytic converter. It is provided with easier setup using an intuitive menu system with “Quick Menu”, advanced GUI, and new larger keypad with tactile keys. In addition, this unit is supplied with approvals of US EPA (RFNA0809186), EN (Sira MC 100167/02), and Australian Standard (AS 3580.5.1-2011).