Solid test plates offer a convenient method of calibration and verifying the performance of optical handheld and Abbe refractometers.

• Silica test plates for added traceability
• Glass test plates for honey handheld refractometers
• No temperature correction required
• Inert material offering longevity

Depending on the type of instrument and the scale range to be verified, a choice can be made between glass or silica test plates. Silica test plates are traceable to recognised standards and may be recertified as part of a quality control standard operating procedure.