The Parts Per Billion has developed a sensor that gives users the information they need to make critical decisions in real time. This technology delivers laboratory-quality analytical results within minutes. It uses molecular machines, biosensors, to measure components in any food to see if it is safe for consumption. The biosensors can detect almost any molecule of interest. Parts Per Billion has been supported by the ON Accelerate program at CSIRO.
http://www.oninnovation.com.au/en/ON-teams/ON-Accelerate5-Teams/Parts-Per-Billion