Ammonia is difficult to measure at ppb levels because of its “stickiness” – its tendency to adsorb to surfaces – such that varying temperature and ambient moisture levels can produce erroneous measurements. Few instruments exist that can simultaneously meet the sensitivity and speed requirements of the most demanding process control applications. Picarro’s EnviroSense 1000 trace ammonia analyzer simultaneously provides both the sensitivity and the speed needed for the most demanding ammonia measurement applications. The EnviroSense 1000 is able to achieve ppb sensitivity in a few minutes and does so directly on the gas stream.