美国Cargille Labs  
Cargille Laboratories, Inc. 自1924年创立以来一直处于高速成长，今天已成为世界上提供折射率匹配油最大最有影响力的公司。目前我们已经拥有250多种各样的折射率匹配油，应用于科研，工业，医院和教学活动中。现在新的不寻常的需求越来越多，实践证明我们是令客户满意的供应商。

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.