Service & Support

Lab Products Tech Support

Andre Pressley
Technical Specialist,
HPLC/UHPLC Columns
Andre has worked in the lab for more than twenty years. The first 15 years were at Rohm and Haas Company where he worked as a formulation chemist on several new product development projects. Since 1998 Andre has enjoyed working as a Technical Specialist where he has had the opportunity to assist customer with their HPLC column questions as well as present technical posters at various tradeshows. Andre has a degree in Chemistry from Philadelphia University.
Danny Shollenberger
Technical Specialist,
HPLC/UHPLC Columns
Danny obtained his Bachelor’s degree in Chemistry from Penn State and a Masters in Chemistry from Lehigh University, where his focus was polymer chemistry and analytical chemistry for the pharmaceutical sciences.  Prior to joining Tosoh Bioscience LLC, he worked at Arkema as an analytical chemist specializing in chromatographic separations and mass spectrometry of industrial chemicals and polymers.  He spent the majority of his career at MillliporeSigma, designing and studying stationary phases and solid supports for HPLC and GC.  His research interests include fundamental studies of HPLC retention mechanisms, particle synthesis, biological sampling/interfacing with mass spectrometry, and applications of carbon materials.