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美國Cargille Labs  
Cargille Laboratories, Inc. 自1924年創立以來一直處于高速成長，今天已成為世界上提供折射率匹配油最大最有影響力的公司。目前我們已經擁有250多種各樣的折射率匹配油，應用于科研，工業，醫院和教學活動中。現在新的不尋常的需求越來越多，實踐證明我們是令客戶滿意的供應商。

Since 1924, Cargille Laboratories has been providing specialized services to a broad range of laboratory sciences. Cargille develops and manufactures optical liquids calibrated for refractive indices for use throughout the many laboratory disciplines involving microscopy and optics. Advances for the microscopy field continually develop from Cargille Laboratories?research.

Cargille has also consistently led in the development and standardization of immersion oils for over 50 years. Cargille immersion oils meet or exceed the ISO 8036-1 Standard, and in fact, Cargille served as a member of the U.S. delegation to the International Standards Organization and helped write the ISO specifications for immersion oils in conjunction with microscope manufacturers, experts, and users worldwide.

Other major products which Cargille concentrates on include highly stable Laser Liquids, mounting medias, optical gels, fused silica matching liquids, comminuted optical glass & mineralogical reference standards, viscosity tubes, beakers, Sink-Floats? Heavy Liquids? and other scientific and laboratory specialties.