Most commonly, Quartz Control Plates (QCP) are used for verifying and calibrating polarimeters, as they are inert and have a relatively low temperature co-efficient, making them easy to handle. QCPs also offer extremely good traceability to internationally recognised standards. Bellingham + Stanley manufacture three types of Quartz Control Plates to the highest standard and are supplied with a Certificate of Conformity showing values in angular rotation (°A) and ISS (°Z) at sodium (589nm) and NIR (850nm) wavelengths at 20 °C.
Standard Quartz Control Plates supplied in protective case, Certificate of Conformity showing optical rotation in ° A & °Z for sodium and NIR wavelengths (only).
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