Calibration standard

opticalfor polarimeterfor saccharimeters

Polarimeter – Quartz Plate Calibration Standards Rudolph Research endeavors to adhere to the highest know calibration standards in the laboratory instrument industry. To view our full NVLAP certificate and Scope of Accreditation, please visit our Quality page. Rudolph Research Analytical Quartz Control Plates 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 specifications outlined on Page 61 of 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 (Picture G), a protective box and a NIST Traceable Certificate. Selecting a Quartz Plate Any rotation is available but generally available stock rotations are listed below. Quartz Plates come in single and dual versions. Single Quartz Plates have a single rotation value at each wavelength and are calibrated in °Arc (Optical Rotation) and °ISS/°Z (Sugar Degrees). Dual Plates are also calibrated in °Arc and °ISS, 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. -10° Arc) and one right or dextro turning plate (i.e. +12° Arc) which may be used separately or together for a combined rotation of 2° Arc (+12°-10°).