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L-Rix 510: When is Your Fermented Liquid Ready to Go?

L-Rix 510 – Enjoy the simplicity of refractive index measurements without maintenance or adjustments.

How to control fermentation

Fermentation is a bio-chemical reaction where fermentable carbohydrates (sugars) are converted into ethanol and CO2 with the help of micro-organism which may be yeast, mould or bacteria.  During the fermentation process the sugar concentration will decrease while the alcohol content will increase. Beside of that carbon dioxide is produced as a by-product which can be collected and reused or sold.

In many traditional fermentation processes like alcohol fermentation a batch process is used. For industrial processes like the bio-ethanol fermentation continuous processes are also in place.

To maximize the ethanol production from the same amount of raw materials the fermentation rate has to be monitored. If the rate is too slow additional slurry or enzymes can be added. Tracking the fermentation rate allows plants to predict and maximize the ethanol percentage up to 48 hours before the process is complete!

Fermentation is a natural process and the time of duration varies from batch to batch.  Why wait hours after the process is complete when we can tell you when fermentation has stopped and the next batch can begin? This gives more revenue for the plant!

Where to find the inline refractometer in the process plant

The Anton Paar EHEDG certified inline refractive index sensor L-Rix 510 is installed directly in the fermenter. The reliable and accurate L-Rix 510 measures the refractive index and line temperature continuously. The data can be used for controlling the process. Additionally L-Rix 510 can help saving and optimizing processing time.


Learn more about the L-Rix 510


Specifications L-Rix 510
Refractive Index1.3100 to 1.5400
AccuracynD ±0.0002
(equivalent to 0.1% mass)
Repeatability nD ±0.0001 (equivalent to ±0.05% mass)
Process temperature -20 °C to 100 °C; CIP/SIP up to 145 °C for 30 minutes
Process pressure100 mbar to 16 bar
(10 bar @ 120 °C)
Approvals and certificationsEHEDG (European Hygienic Equipment Design Group) certified; Hygienic Design 3A standard 46-02

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