Jonathan D. Martinez holds a Bachelor of Science degree in chemistry, with a minor in physics, from Stephen F. Austin State University (Nacogdoches, Texas USA). As an Analytical Metrology Scientist, Doug has primary responsibility for daily laboratory calibration and measurement activities including transfer spectrophotometer operation, calibration data acquisition and calibration data/report review. In addition, Doug is responsibility for shipping, receiving and control of certified spectrophotometer reference material artifacts. Doug is also actively involved in maintaining customer communications.