折射率标准
在每次分析之前，需使用折射率標準品來檢查折射計在測定糖含量時的精確度。已知濃度將驗證零基線讀數，使後續讀數能夠正確比較，以確保生產一致性。蔗糖溶液用於評估不需控制溫度的設備，而校正油則測試涉及特定條件的儀器。折射率標準品保證食品工業可向客戶提供精確的白利糖度（Brix）量測報告。
VWR®, Refractive index standards
Supplier: VWR Chemicals
Refractive index of each standard is verified using a calibrated and temperature controlled refractometer.
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VWR®, Sucrose (Brix) standards, stabilised solutions for refractometry
Supplier: VWR Chemicals
A range of Brix/refractive index standards for ease of use when calibrating all types of refractometers.
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VWR®, Refractive index standard kits for calibration according to Ph. Eur. 2.2.6
Supplier: VWR Chemicals
These standards are for the calibration of refractometers prior to use.
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VWR®, Multi-Parameter Refractive Index and Density Certified Reference Material At 15, 20 and 25 °C
Supplier: VWR Chemicals
The Refractive Index and Density Certified Reference Materials provide a flexible, cost-effective and efficient solution to any laboratory calibrating and/or verifying refractive index and density measurements – all from a single material.
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VWR®, Refractive index Certified Reference Material at 20, 25 and 30 °C
Supplier: VWR Chemicals
Refractive index Certified Reference Materials (CRMs) are ideal for verification and calibration of temperature controlled refractometers, with each CRM providing certified values for refractive index measurements at 20, 25 and 30 °C.
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Sucrose solutions for refractometers
Supplier: Atago
Sucrose solutions are used for confirming the Brix measurements of refractometers.