offices

Main Office and Sales
10180 SW Nimbus Avenue
Suite J/5
Tigard, OR 97223-4338
t: 503.624.1100
f: 503.620.3505

East Coast Office
620-G Valley Forge Road
Hillsborough, NC 27278
t: 919.245.3131
f: 919.245.1538

Testing Services


Our scientists can analyze quartz-fiber and glass-fiber filter samples from an extensive array of sources and for a wide variety of applications using Sunset Laboratory instruments. We use careful system control and continuous monitoring of the optical absorbance of the sample during analysis. This prevents any undesired oxidation of original elemental carbon and corrects for the inevitable generation of carbon char produced by the pyrolitic conversion of organics into elemental carbon.