Authorized servicing center for the ELSD MKI,MKII,MKII-A,MKIII and 500! . 12 years of experience servicing Preparative Scale HPLC and GC instrumentation. 11 years of specialized experience on Evaporative Light Scattering Detectors. Upgrades, rebuilds, repairs, and service contracts available. Complete on-site parts inventory for quick turn-around. On-site specialized ELSD service training available.