Tobin Testing provides comprehensive analytical services in the Appalachian basin from Williamsport, PA. Laser diffraction particle size analysis is performed in-house for responsive testing of both water and oil-based drilling fluids. Fast turnaround, accurate results, and responsive service for your drilling mud analysis (API RP 13B-1 / ISO 10414) are our areas of expertise. All particle size analyses (ISO 13320) are performed using state-of-the-art laser diffraction. Accurate and expeditious particle-size analysis is crucial to drilling mud management. We can help optimize your mud management to lower costs and reduce non-productive time.