TY - RPRT TI - An inexpensive solvent gradient system for liquid chromatography. AU - Y S Kim AU - J M Kootsey AU - G M Padilla PY - 1977 DO - 10.1016/0003-2697(77)90034-3 UR - https://pubmed.ncbi.nlm.nih.gov/848750/ ID - 848750 ER -