Ammonia (NH₃) is often forgotten as an environmentally harmful gas, but plays an enormously important role in many processes in our world today. The TDLS technology in the Axetris LGD Compact-A NH3/H2O laser gas detection OEM module detects ammonia down to the sub-ppm range and does so without cross interference from other gases. Its robust design is specifically developed for harsh environmental conditions. In addition, the LGD module scores with maintenance requirements close to none.