* Choose a placement location in the process line that will get a truly representative sample * Filter to separate liquid mixtures * Make sample lines as short as possible * Design to prevent pressure drop across valves and fittings * Design to use as few fittings as possible to prevent potential leak points, and use weld fittings as needed Sampling systems are typically custom designed and engineered at the time of order. They can involve a very complicated design in order to guarantee that they will get a true representative sample from a process. Depending on the application and the nature of the gases in the emissions stream, phase changes may occur, and if appropriate precautions are not taken, damage to expensive analyzers could result. Meanwhile, if the samples that are collected for analysis are not truly representative of the process, inaccuracies will occur. This will lead to erroneous or misleading readings, which can have serious ramifications in terms of increased environmental pollution, and increased costs to the end user, such as loss of product or inefficient process conditions. Minimize sample contamination Handling the sample can be a potential point of contamination. Common errors that can lead to samplehttp://www.epa https://www.epa.gov/haps/initial-list-hazardous-air http://www.epa.gov/laws-regu https://www.epa.gov/sites/production/files/2014 http://www.govregs.com/regu http://WWW.CHEMENGONLINE.COM http://store.chemengonline.com