Refractive Index Determination Device

Overview Knowledge Standards

The refractometer is based on the principle of the change in the refraction angle of light in different media, and calculates the refractive index of a sample by measuring the critical angle or refraction angle. It is used to detect the concentration and purity of liquids or transparent solids, and is employed in the chemical and food industries to monitor sugar content, oil content, and the proportion of solution components.

Selection

When selecting, consider that the measurement range covers the refractive index of the samples, and the accuracy meets the detection requirements. Pay attention to the temperature compensation function to adapt to environmental changes, and choose between automatic or manual calibration types. For small sample volumes, opt for a micro-volume model, while standard models are suitable for routine testing. Check the corrosion resistance of the sensor material to ensure compatibility with the solvents to be tested.

Standards

Active GB/T 614-2021

Chemical reagent—General method for the determination of refractive index

Articles

Abbe refractometer measures the relationship between refractive index and concentration of liquid coating resins.

This article introduces the method of measuring the refractive index of liquid coating resins using an Abbe refractometer and calculating the concentration based on the relationship between refractive index and concentration.