For a fourth year, Inc. magazine has named Tiger Optics LLC in its 5000 list of the fastest-growing private companies in the US.

Demonstrating the company’s ongoing growth and development, the magazine ranked Tiger as the 76th fastest-growing firm for manufacturing, based on its percentage revenue growth from 2008 to 2011.

In the greater Philadelphia area, Tiger Optics was rated even higher, listed as the 71st fastest-growing private company. Nationwide in the US, Tiger ranks 2,285th on the 2012 Inc. 500|5000.

The rankings mark another significant footstep in the rapid rise of Tiger Optics. Founded in 2001, the company makes extremely sensitive, laser-based environmental air monitors for continuous emissions and agricultural process control, as well as gas analyzers to monitor highly critical processes for semiconductor fabrication plants, High Brightness LEDs and gas manufacturers.

Close to 1,500 robust Tiger units serve these demanding applications, along with the metrology institutes of 16 nations.

The company makes all of its products in Pennsylvania, while over 50 percent of its sales occur in foreign markets. Its 2011 revenue of $10.3 million rose 110 percent from 2008 revenue of $4.9 million. Previously, Inc. magazine has named Tiger Optics to its 500|5000 lists in 2011, 2009 and 2008.