Polarimeter – Quartz Plate Calibration Standards
Rudolph Research endeavors to adhere to the highest know calibration standards in the laboratory instrument industry. To view our Scope of Accreditation, please visit our Quality page.
Fabricado conforme a las normas NIST e ICUMSA
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.
Selección de un patrón de calibración de cuarzo
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.
Llámenos para seleccionar un patrón de calibración que se adapte a su aplicación
Las placas de cuarzo TempTrol™ indicadas con la letra "T" disponen de la posibilidad de control automático de la temperatura cuando se adquieren con un Autopol® IV o V con TempTrol.
Placa de control de cuarzo TempTrol A700T-1
Placa de control de cuarzo estándar 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
Placa de control de cuarzo TempTrol 300T-S
Placa de control de cuarzo estándar 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
Placa de control de cuarzo TempTrol A700T-2
Placa de control de cuarzo estándar 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
Placa de control de cuarzo TempTrol 301T-S
Placa de control de cuarzo estándar 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
Placa de control de cuarzo TempTrol 302T
Placa de control de cuarzo estándar 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
Recalibrado de las placas de control de cuarzo
Ni el NIST ni ICUMSA proporcionan directrices sobre la frecuencia de la recalibración de la placa de control de cuarzo del polarímetro. Dado que el cuarzo es ópticamente estable a lo largo del tiempo, los cambios en su rotación óptica son el resultado de la tensión óptica o de arañazos en la superficie causados por la manipulación física. Por lo tanto, la opinión de Rudolph Research Analytical es que la recalibración de un patrón de calibración de cuarzo cada dos o tres años es satisfactoria. Para obtener más ayuda con la recalibración de la placa accesoria de cuarzo, envíe un correo electrónico a info@rudolphresearch.com, o llame a nuestra fábrica al +1-973-584-1558.
Cada placa de control de cuarzo está calibrada por Rudolph Research Analytical y es trazable al Instituto Nacional de Normas y Tecnología(NIST).
