The standard group consists of a total of 222 different liquids divided into seven different series extending in the range from 1.300 to 2.11. The three Certified Series cover the range of the most minerals, most chemicals, and practically all biological materials. All refractive index values were taken at the D line which is 589.3 nm (5893Å) at 25° C.
Standard packaging of all fluids is the 0.25 fl. oz. (7 ml) bottles with applicator tops.
Sets are packed in attractive partitioned boxes for convenient access and orderly storage.
Temperature coefficients and dispersion values are included on each index liquid label.