The GASPOROX technology is based on optical spectroscopy using low-power diode lasers. The gas is sensed by sending laser light through the sample, probing the gas content without any change of the sample. The gas can for example be located in a headspace of a package, inside porous materials or in gas cavities inside the human body. The GASPOROX technology can also be used for leak testing. 

TDLAS technology - how it works

The technology used at Gasporox is based on a widely used laser spectroscopic technique called 
TDLAS, Tunable Diode Laser Absorption Spectroscopy. Using TDLAS means that every gas molecule absorb light in a unique way at a certain wavelength and as the laser is tuned across one of the gas absorption lines there will be a change in intensity of the light after some distance of travel through the monitored gas. From this the gas concentration can be extracted and presented.
The gas can be Oxygen (O2), Carbon Dioxide (CO2) or Water vapor (H2O). 
Gasporox also uses a unique version of the TDLAS technology, developed by researchers at Lund University in Sweden, called GASMAS, GAs in Scattering Media Absorption Spectroscopy. The GASMAS technique is unique in that the method applies TDLAS for determination of gases inside pores, cavities and packages surrounded by light-scattering media. 
Gasporox are experts in the TDLAS technologies with focus areas food and pharma packages, whether transparent or non-transparent as well as leak testing on any package material. The package material can range from totally transparent to materials that only allow for a minor fraction of the light to pass and be detected.

Applications

Gas inside packages or leak testing

GASPOROX laser sensors can measure the gas concentration inside the headspace of packages.
The gas can be Oxygen (O2), Carbon Dioxide (CO2) or Water vapor (H2O). This ensures correct gas mix in the packages which is crucial for quality, safety and prolonged shelf life. The packages can be any type of bag, bottle, vial or tray for the food or pharmaceutical industry, whether transparent or non-transparent and made of materials such as plastic, glass, foil, carton or paper. 

 

Package leak detection

GASPOROX laser sensors can determine whether a package is leaking or not and with our concept extremely small leaks can be detected. The packages can be any type of bag, bottle, can, tray or vial for the food or pharmaceutical industry. The packages can be made of virtually any material, including metallic containers. 

 

Other applications

The free gas seated inside food products can be measured with GASPOROX laser sensors. The gas can be located in pores inside for instance bread, fruit or meat. The measurement can be used to study ripeness, respiration and gas content. This techinque can also be used for material analysis with parameters like porosity, dampness and gas diffusion.

Medical Diagnostics

With GASPOROX laser technology it is possible to measure the gas located inside the human body. This can be used for medical diagnosis of sinusitis, otitis and for monitoring lung function of premature born babies.
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