Refractive Index standards Certified standards with values expressed in Refractive Index (R.I) units nD. -Test results are ISO17025 accredited with an uncertainty of measurement up to ±0.00014 nD units for all Refractive Index values. -Nominal Refractive Index values are taken from the ICUMSA published tables. -Extended shelf life of 1 year. -Can be used with any brand of Refractometer. -Convenient high quality dropper bottle.
Product Specification: Refractive Index at 20 °C: 1.42009
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