Measurement of refractive index, average or partial dispersion of transparent or semi-translucent liquid and solid substances. Measurement range: Refractive index nD for solid substances: 1.30-1.95 Refractive index nD for liquid substances: 1.30-1.70Accuracy: Refractive index nD: ±5 ´ 10-5Wavelengths706.5, 656.3, 589.3, 587.6, 546.1, 486.1, 435.8, 404.7nmWeight (net): 11kg