ZefSci Inc. is a engineering scientific firm specializing in state of the art LCMSMS instrumentation. We cover most HPLC/UPLC, LC/MS/MS, TOF & Orbitrap instruments used in the pharmaceutical, biotechnology, chemical, cosmetics and other industries. Service options include repair and service contract, preventive maintenance, or time and material. ZefSci is also fully integrated in instrument compliance and qualification as a added value to our customers. Proud distributor and authorized service provider for Shimadzu Scientific chromatography products. #shimadzu Native top down analysis using EMSion ECD technology #EMSion reseller and authorized service prvider. USA West Coast authorized service provider for Evosep #evosep ZefSci is the exclusive distributor of the V-KIT product in North America