Gas-related equipment manufacturer Witt-Gasetechnik (Witt) has launched a device that provides a new test method for modified atmosphere packaging.

Designed by MAP experts, the Oxybeam gas analyser uses a laser beam to determine how much oxygen content is present in the packaging.

The device will reportedly help the company reduce the costs of quality controls even if the packaging is destroyed and the product can no longer be sold.

Witt noted that the device can only work if it has a small viewing window into the interior of the packaging similar to those present in shells, deep-drawn trays or tubular bags.

During testing, the product is placed under the sensor and a touchscreen helps to take the measurements.

“The system represents a real advance in the final inspection of products packed under a protective atmosphere.”

According to the company, the analyser provides an accuracy of 0.1% absolute in terms of measuring residual oxygen content.

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Witt-Gasetechnik Marketing head Alexander Kampschulte said: “The system represents a real advance in the final inspection of products packed under a protective atmosphere.”

Oxybeam measures the amount of laser light absorbed in the packaging and therefore determines the oxygen content.

The device reportedly offers cost savings when compared to other light-based systems since it does not require a separate reflecting surface to be glued inside the package or printed on the inside of the film.

Oxybeam also allows repeated tests on a package, as the laser exits the packaging without damage and consumption of any protective gas during its use.

A class 1 infrared laser with a wavelength of 760nm and power of less than 0.5mW is used for testing.