fixed sample prep
fixed sample prep

USGSDenverPychron/pychron,NMGRL/pychron,NMGRL/pychron,USGSDenverPychron/pychron,UManPychron/pychron,USGSDenverPychron/pychron,UManPychron/pychron,NMGRL/pychron,NMGRL/pychron,UManPychron/pychron,UManPychron/pychron,USGSDenverPychron/pychron