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The Lower the Oxygen the Better the Beer

Oxygen in beer reduces shelf life and can affect flavor. Advanced optical measurement and sensor diagnostic technologies ensure you are keeping oxygen to a minimum, simply and dependably.

Minimizing oxygen
Oxygen in the brewing process is monitored because of its importance on the quality, taste and shelf life of the beer. After fermentation, beer is close to being oxygen free and maintaining this very low oxygen level is important for quality assurance. Therefore O2 uptake during the following separation, filtration, storage and filling processes has to be minimized. To reduce the risk of contamination, permanent and precise oxygen monitoring is required.

Continuous measuring of oxygen concentration places high demands on an in-line O2 system. Such equipment must be easy to install and operate, require minimal maintenance and, most importantly, always measure accurately.

Intelligent optical sensor
The latest development in optical oxygen sensors, the InPro 6970i from METTLER TOLEDO, delivers outstanding performance at low oxygen levels down to 2 ppb. Based on fluorescence quenching technology, it combines high measurement performance with Intelligent Sensor Management (ISM) functionality.

Optical oxygen sensors offer many advantages over amperometric sensors; reduced and easier maintenance, and long term stability resulting in reduced cost of ownership being only two of them. The only consumable, the OptoCap, has a significantly longer lifetime then amperometric membrane bodies and can easily be replaced within a few minutes. No polarization or liquid handling is necessary. Once the sensor is calibrated it is ready to use.

ISM technology adds to these advantages by simplifying maintenance planning and documentation of all sensor data. Using advanced diagnostic tools, the quality of the sensing element and all sensor components are permanently monitored. Early signs of sensor ageing or failure are immediately displayed to the user.

Thanks to Plug and Measure, the sensor can be connected to an M400 transmitter, and all data, including calibration and information about the sensor history, e.g. the stresses that the sensor has been exposed to, the number of CIP cycles and much more, are transferred to the transmitter. The system becomes ready for use within a few seconds and no complicated configuration or failure prone calibration at the point of use is required.

A new standard - ISM and optical DO
The combination of high performance, ease of use and benefits of ISM and the iSense calibration and documentation software tool, make the InPro 6970i the most advanced oxygen sensor available today. Indeed, some of the biggest breweries in the world have already introduced the InPro 6970i as a new standard for all low ppb applications in their brewing processes.

To benefit from optical measurement technology and ISM in your brewery, go to:

METTLER TOLEDO specializes in the area of precision instruments for professional use. METTLER TOLEDO laboratory instruments are used in research, scientific, drug discovery, and quality control labs, amongst many others in the pharmaceutical, chemical, food and cosmetics industries. METTLER TOLEDO comprehensive industrial solutions cover the various steps in a host of manufacturing processes at many of the same customers that laboratory serves. Solutions range from receiving raw materials through various manufacturing processes, in-line process control and end-of-line packaging control, to logistics and shipping. Increasingly, these solutions are fully integrated into the customer's IT environment, helping automate their workflows. In food retail, our offering for fresh food management ranges from receiving and pre-packaging, to in-store solutions for self-service departments, deli counters, and checkout terminals.

Mettler-Toledo International Inc.
Im Langacher, Zip Code 8606
Greifensee, Switzerland
E-Mail :
Phone : +41-44-944 33 85
Website :

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