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 Scope of Accreditation, please visit our Quality page.
Manufactured to ISO 17034 CRM | ISO/IEC 17025 | SI-Traceable | ICUMSA Methods
Rudolph Research Analytical Quartz Control Plates provide a stable reference for calibrating polarimeters and saccharimeters. Manufactured from high-quality crystalline quartz and precision processed for planeness, parallelism, purity, and axis orientation, these materials meet applicable specifications described in NIST Circular C440 and utilize ICUMSA-recognized methods where appropriate. Each plate includes calibration data at 11 wavelengths, a protective case, and documentation supporting metrological traceability to the SI, with measurements performed under ISO/IEC 17025 and produced in accordance with ISO 17034.
Selecting a Quartz Calibration Standard
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°). Every Rudolph Research Analytical Quartz Plate is manufactured to a reported uncertainty of ±0.002° Arc at 589. Please contact the factory for the Quartz Accessory Plate that is best suited for your needs.
Call Us To Select A Calibration Standard That Meets Your Application
TempTrol™ Quartz Plates indicated by the letter “T” have the facility for automatic temperature control when purchased with an Autopol® IV or V with TempTrol.
TempTrol Quartz Control Plate A700T-1
Standard Quartz Control Plate A700-1
Has a rotation between +10 to +35 angular degrees (°Arc) or +28 to +102 International Sugar Scale degrees (°ISS)/(°Z). The Quartz Control Plate consists of one right turning quartz plate.
Standard Rotations at 589 nm: 10.5°, 11°, 11.5°, 12°, 12.5°, 13°, 15°, 16°, 20°, 21.5°, 23°, 34°, 34.5°
Accuracy at 589 nm: ±0.002° Arc
TempTrol Quartz Control Plate 300T-S
Standard Quartz Control Plate 300-S
Has a rotation between +10 to +35 angular degrees (°Arc) or +28 to +102 International Sugar Scale degrees (°ISS)/(°Z). The Quartz control plate consists of one right turning quartz plate which is to be within ±0.5° Arc or ±1.5° ISS of the customer’s specified rotation.
Rotation: Customer Selected
Accuracy at 589 nm: ±0.002° Arc
TempTrol Quartz Control Plate A700T-2
Standard Quartz control plate A700-2
Has a combined rotation between +1 to +10 angular degrees (°Arc) or +2 to +30 International Sugar Scale degrees (°ISS)/(°Z). The Quartz Control Plate consists of one left and one right turning quartz plate in separate cells, each of which can be removed from the cell holder for using either plate separately or together for a combined rotation.
Standard Rotations at 589 nm: approx. 1°, 2°, 6° (See Picture H)
Accuracy at 589 nm: ±0.002° Arc
TempTrol Quartz Control Plate 301T-S
Standard Quartz Control Plate 301-S
Has a combined rotation between +1 to +10 angular degrees (°Arc) or +2 to +30 International Sugar Scale degreez (°ISS)/(°Z). The Quartz Control Plate consists of one left and one right turning quartz plate in separate cells, each of which can be removed from the cell holder for using either plate separately or together for a combined rotation. Quartz Control Plates are to be within ±0.5° Arc or ±1.5°ISS of the customer’s specified rotation.
Rotation: Customer Selected
Accuracy at 589 nm: ±0.002° Arc
TempTrol Quartz Control Plate 302T
Standard Quartz Control Plate 302
Has a rotation between -10 to -35 angular degrees (°Arc) or -28 to -102 International Sugar Scale degrees (°ISS)/(°Z). The Quartz Control Plate consists of one left turning quartz plate.
Standard Rotations at 589 nm: -10°, -10.5°, -10.75°, -11°, -11.25°, -12°, -15°, -16°, -22°
Accuracy at 589 nm: ±0.002° Arc
TempTrol Quartz Control Plate 302T-S
Standard Quartz Control Plate 302-S
Has a combined rotation between -1 to -10 angular degrees (°Arc) or -2 to -30 International Sugar Scale degrees (°ISS)/(°Z). The Quartz Control Plate consists of one left and one right turning quartz plate in separate cells, each of which can be removed from the cell holder for using either plate separately or together for a combined rotation. Quartz Control Plates are to be within ±0.5° Arc or ±1.5°ISS of the customer’s specified rotation.
Rotation: Customer Selected
Accuracy at 589 nm: ±0.002° Arc
Recalibration of Quartz Control Plates
Neither NIST nor ICUMSA provide guidelines for the frequency of Polarimeter Quartz Control Plate Recalibration. Since quartz is optically stable over time, changes in its optical rotation are the result of optical stress or surface scratches caused by physical handling. Therefore, it is the opinion of Rudolph Research Analytical that recalibration of a Quartz Calibration Standard every two to three years is satisfactory. For further assistance with quartz accessory plate recalibration, send an email to info@rudolphresearch.com, or call our factory at +1-973-584-1558.
Every Quartz Control Plate is calibrated by Rudolph Research Analytical and is traceable to the National Institute of Standards and Technology (NIST).
