Refractive index liquids are sold in 1oz bottles with applicator caps. Temperature coefficients and disperion values (nC, nF, nF-nC, Abbe vD) are included on each index liquid label. All refractive index liquids are standardised at 589.3 nanometers (D Line) and 25 C.
Letter of Certification is made to order per liquid. Each letter required must be ordered as a separate item.