Analyze the concentration of your solutions with precision using refractometry
Refractometry , and the optimization of formulations. Fast and non-destructive, this method is ideal for quality control and monitoring manufacturing processes.
How does refractometry work?
Refractometry relies on measuring the refractive index of a material, which varies depending on its composition and the wavelength of the light used. Its principle is based on the deviation of light when it passes through a transparent medium .
The key steps in a refractometry analysis:
- Sample preparation – The sample, liquid or solid, is placed on the prism of the refractometer.
- Light emission – A light source passes through the sample, changing the angle of refraction according to the concentration of the solute.
- Detection and calculation – The optical sensor measures the critical angle of refraction and converts it into a refractive index.
- Interpretation of results – The refractive index is compared to reference values to determine the concentration or purity of the sample.
This method is simple to use and offers immediate results, making it indispensable for routine analysis and industrial quality control.
Technical characteristics of refractometry
Refractometry is a reliable technique adaptable to many analytical needs. Its characteristics vary depending on the equipment and applications .
- Measurement range : Refractive index generally between 1.3000 and 1.7000.
- Accuracy : Up to ± 0.0001 on the refractive index depending on the type of device.
- Light source : LED, sodium (589 nm) or white light for specific applications.
- Thermal compensation : Some refractometers incorporate temperature control to limit variations due to environmental conditions.
- Types of devices : Manual, digital or online refractometers, depending on the level of accuracy and automation required.
Thanks to these characteristics, refractometry is suitable for production environments requiring speed and reliability.
For which matrices is tensiometry suitable?
Tensiometry is applicable to a wide range of liquid samples and interfaces:
For which matrices is refractometry suitable?
Refractometry used in many sectors to ensure product quality and compliance with standards.
In these sectors, refractometry makes it possible to optimize manufacturing processes and guarantee consistent quality of finished products.
Léa Géréec
Technical and scientific advisor
