SEATTLE, Sept. 11, 2013 /PRNewswire/ -- ClearSign Combustion Corporation (NASDAQ: CLIR) today announced that it has measured and documented a further 33% reduction in emissions of Nitrous Oxides (NOx), now down to 2 parts per million (PPM) from its previous record of 3 PPM announced in June. This marks a major milestone in the development of ClearSign's Duplex™ Burner Architecture, and marks the early achievement of an aggressive 2013 target for the company. The announcement occurred during a live web conference yesterday, attended by members of the media and potential partners and customers. A roundtable of subject matter experts provided context and discussed the market implications of the achievement. The panel included current and former managers and leading researchers at Marathon Petroleum Corporation, Chevron Corporation, The Energy Solutions Center and the University of California, Berkeley. The web conference has been archived and is available for viewing here, or by visiting clearsign.com "Earlier this year, we set what we believed was an aggressive goal of achieving 2 PPM of NOx by the end of 2013, using a combination of ClearSign's Electrodynamic Combustion Control™ (ECC™) and our Duplex™ Burner Architecture technologies," said ClearSign CEO, Rick Rutkowski. "Today, I am extremely proud to report that we have not only achieved this important objective but, thanks to the efforts of our development team, made it happen much earlier than we anticipated. We plan to continue our efforts and have set a new stretch goal of dropping NOx by a further 50% to 1PPM or lower by the end of this year." Richard Biljetina, Director, Industrial Markets at the Energy Solutions Center provided context and noted, "The important thing to understand is just how difficult it is to get below 10 or 15 PPM [of NOx]. Current solutions such as FGR [Flue Gas Recirculation] have very high efficiency penalties and SCR [Selective Catalytic Reduction] has very high cost penalties. So at ESC, what we are looking for, for our customers, are burners that do the job in the burner itself using techniques such as internal recirculation, or exactly the type of things you're hearing about from ClearSign. Because truly, if we can achieve 2 PPM without any efficiency penalties at very reasonable cost, that would be a extremely great accomplishment." Rutkowski added, "The use of conventional Low NOx and Ultra Low NOx burners has typically involved significant costs to owners not only in the form of capital and construction costs but in the form of penalties to energy efficiency and process throughput and even maintenance costs. Moreover, these increased costs become more severe as lower levels of NOx emissions are pursued. Energy efficiency is reduced by requirements for supplemental FGR and increased O2 levels and by constraints to operating range (turndown). By contrast, we believe ClearSign's Duplex Burner technology promises to reverse this trend by potentially eliminating these requirements and removing the constraint to operating range."