Member since: 2014
Organization: Fraunhofer IVV
Application Area: Mass Spectrometry
"The gas calibration unit (advanced model) offers PTR-MS and PTR-TOFMS users the opportunity to calibrate their instrument from cylinder-based gas standards. It can be additionally operated as a zero-air generator, which is a useful feature when carrying out dynamic headspace analyses. In the advanced model (GCU-a), the carrier gas humidity can be varied from dry conditions to 100 % RH at 40 °C, and CO2 can be optionally spiked into this gas stream at steady concentrations. This makes it ideal for calibrating the PTR-MS at exhaled breath conditions, which is essential when carrying out in vivo aroma release or medical breath analysis studies. This unit is an excellent tool for ensuring steady performance of your PTR-MS instrument for a handful of VOCs. Highly recommended."