Rudolph Research Standard Quartz Control Plate with 3 Rotations

The Rudolph Research TempTrol / Standard Series Quartz Control Plate Calibration Standards provide a permanent calibration standard for polarimeters and saccharimeters. Every Rudolph calibration standard is manufactured using extremely stable crystalline quartz which is manufactured and polished to specific planeness, parallelism, purity and axis standards. These standards meet or exceed the National Institute for Standards and Technology (NIST) Circular C440 or as laid down by the International Commission for Uniform Methods of Sugar Analysis (ICUMSA). Each Quartz Plate comes complete with a label showing calibration at 11 different wavelengths.

Quartz Plates come in single and 3 Rotation Quartz Plates. Single Quartz Plates have a single rotation value at each wavelength and are calibrated in °Arc (Optical Rotation) and °ISS/°Z (Sugar Degrees). 3 Rotation Quartz Plates are also calibrated in °Arc and °ISS/°Z, but have three rotation values at each wavelength. This is possible because each plate is made up of one left or levo turning Quartz Plate (i.e. -28° Arc) and one right or dextro turning plate (i.e. +30° Arc) which may be used separately or together for a combined rotation of 2°Arc (30°-28°). Every Rudolph Research Analytical Quartz Plate is manufactured to a reported uncertainty of ±0.002° Arc at 589.