Prof. Gachanja explains to participants how to use and maintain parts of the GC-MS machine at the Chemistry Laboratory, JKUAT Published October 23, 2014 at 1602 × 1335 in Royal Society of Chemistry Fellow Raises Hope for Africa Prof. Gachanja explains to students how to use and maintain parts of a Gas Chromatography and Mass Specrometry machine at the Chemistry Laboratory, JKUAT