The best way to measure the color of citrus juice, like orange juice, is by using a spectrophotometer, which will accurately handle the unique composition of the natural ingredients. Elements like common citrus juice color indices and color scales and 45°/0° measurement geometry in your testing system will help you adhere to industry standards.
Use the Right Technique to Measure Citrus Liquids
When measuring a citrus juice like orange juice, you'll be testing an opaque liquid. The opacity or transparency of your beverage will determine which mode you'll use for measuring. Opaque juices should be measured in reflectance spectrophotometric mode, while translucent drinks can be measured in reflectance or transmittance spectrophotometric mode.