RapidOxy 100: Calculating the oxygen consumption
The RapidOxy 100 from Anton Paar can serve as a very useful tool to easily determine the oxygen consumption of manifold samples. This is a helpful and highly valuable additional information when investigating the oxidation stability of your products.
The oxygen consumption is a relevant factor providing additional information about the measured sample’s interaction with oxygen at specific point of time. Further-more, it can be used to determine the oxidation rate which can be crucial in regards of employed antioxidants. The oxygen consumption of a sample depends on temperature, pressure, and most importantly on its chemical nature. To give a simple example on the latter: Edible oils usually consume more oxygen at same conditions than diesel because they typically contain more double bonds (= unsaturated) that are prone to oxidation. This is represented in an elevated oxygen consumption compared to the saturated carbon chains of diesel that do not suffer from oxidation.
With the RapidOxy 100 you have all required parameters for the calculation of the oxygen consumption directly simply at hand.
In the following the calculation of the oxygen consumption is explained and discussed with the help of some examples. To demonstrate the influence of the temperature on the result, chia seed oil is compared at two different temperature levels. Finally, a measurement with a verification fluid, which is a diesel sample, clearly shows the difference between an edible oil and a fuel relating to their oxidizability.
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