Warsash Scientific announces the introduction of glass refractive standards sets from CRAIC Technologies. The glass and oil standard reference materials set will calibrate glass refractive index measurement instruments such as the rIQ designed to measure the refractive index of microscopic fragments of glass and glass-like materials.
The Refractive Index Glass Standards set consists of both calibrated glass samples and immersion liquids calibrated for refractive index versus temperature. The glass materials consist of optical glass in sizes suitable for crushing and using with rIQ and other automated glass refractive index measurement systems. The oils are calibrated and also designed for use with automated glass refractive index measurement systems. These standard reference materials are designed to be in compliance with the standard test methodology defined by ASTM 1967.
CRAIC Technologies President Dr Paul Martin explains that they needed to develop a new source of reference materials for their customers with the introduction of the rIQ automated refractive index measurement system for glass.
The default set of standards consists of a number of glass materials and high purity silicone oils. The glass standard reference materials cover a refractive index range of 1.4800 all the way to 1.5400. This range is also covered by the oils. Additionally, the oils have a thermal coefficient and a delta of that coefficient that meets the ASTM criteria for these types of tests. As part of the test methodology defined by ASTM 1967, the oil and glass standards are used to calibrate the glass refractive index measurement system prior to casework analysis. The set represents a new well characterised source for glass refractive index instrument calibration.