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K-Patents is the leading supplier of process refractometers for industrial process monitoring and control. The refractometers are used for measuring the concentration of solutions in all types of liquids and mixtures. A K-Patents refractometer provides a reliable and accurate real time measurement, ideal for process optimization and control. Product quality and batch times are more precisely controlled and costs are reduced. The time consuming and costly sampling procedures are replaced with a continuous inline refractometer measurement, that is virtually service and maintenance free.

Link to Refractive Index Measurement Principle

Concentration (% by weight,)
Liquid density (% solids)
Refractive index (R.I.)


K-Patents Sanitary Refractometers are 3-A approved and EHEDG certified to meet the highest hygienic requirements of food, beverage and pharma production.