Model LI-7500A -Open Path CO2/H2O Analyzer

The LI-7500/LI-7500A is the most widely used open-path CO2/H2O analyzer in the world. Since its introduction in 1999 it has been directly cited in over 1500 peer-reviewed scientific publications, and scientists rely on the analyzer for its high precision, accuracy, and stability. Many instruments fielded in 1999 are still in continual field use today.