Specifications include, but are not limited to: A. To provide maintenance, repair and diagnostic services for 5975 GCMS turbo system with a 5975C inert MSD standard turbo El mainframe, an Agilent 7890A series GC custom, a 7683B auto injector module, 7683and a bar code reader/mixer module. B. To provide maintenance, repair and diagnostic services for 5973D GCMS system handle GM-86288 with a 7683 auto injector module, a 7683 auto sampler tray module, an Agilent 7890B GC for MS with SSL inlet, a 5973N MSD diffusion – pump El mainframe, and a 5973A performance upgrade kit. C. To provide maintenance, repair and diagnostic services for 5973D GCMS system handle GM-88530 with a 6890 plus GC system, a 5973N MSD diffusion-pump El mainframe, a 7683 auto injector module, and a 7683 auto sampler tray module. D. To provide maintenance, repair and diagnostic services for 5973D GCMS system handle GM-73573 with a 5973N MSD diffusion-pump El mainframe, a 7683 auto injector module, a 6890 plus GC system, and a 7683 auto sampler tray module.