Refractometry

Refractometry is an ideal analytical procedure for a fast and reliable measurement of the refractive index, of the concentration or of the density of liquids.

The refractometer PIOX R determines the refractive index on the base of a measurement of the deflection angle of transmitted light, not of a measurement of the critical angle as most of the common refractometer do.

This method has the advantage that the whole sample determines the measuring value, and not only a thin layer on the surface. It is more precise as the critical angle method and a higher resolution can be obtained. It also has the advantage of not being sensitive to deposits forming on the prism, thus allowing a drift free measurement. No extra devices for the cleaning of the optical components are necessary.

Typical Applications

Laboratory:

Refractive index and concentration measurement on any two components mixture
Concentration measurement on non alcoholic beverages (°Brix)
Metering of wine must (°Oechsle)
Alcohol or extract metering of alcoholic beverages (beer, wine, spirits)

Food and Drink Industry:

Determination of the alcohol content
Determination of wort (°Plato)
Concentration measurements on soft drinks and juices (°Brix, °Oechsle)
Sugar measurement
Beer analysis (alcohol, wort and original wort) is possible in combination with a density meter
Density measurement

Chemical industry:

Measurement of spinning solution (DMA, DMF)
Concentration measurement (e.g. during destillation or rectification)
Process control
Quality control

Advantages

	The result is not influenced by coating on the optical surfaces
	High measuring sensitivity and long term stability
	Independent of viscosity, not sensitive to bubbles
	User-friendly, service-friendly
	Ideal adaptivity to the existing structure due to the use of standardized inline enclosures (VARIVENT, APV, TOYO)
	Special sensors for high pressure and high temperature available (up to 300°C)

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