In a large customer and user survey taking place in summer 2007* we contacted all customers and known PTR-MS users to ask them about what they think of our performance.

We invite you to find out what PTR-MS users said when we asked the two following questions:

Why do you use PTR-MS for this task?

Would you recommend PTR-MS to others? Why?

Some replies of our customers:

• “The range of compounds and the fast response times make the PTR-MS an ideal instrument”
• “The instrument is reliable and the support that comes with it is excellent.”
• “Because of the high sensitivity and the fast time response of PTR-MS.”
• “PTR-MS is a really versatile tool in environmental research.”
• “Time response and sensitivity”
• “It would depend on the application, but PTR-MS is currently the only real time VOC method available with sufficient sensitivity and reliability to take into the field.”
• “it is a very fast analysis and good sensitivity”
• “sensitivity and speed of analysis”
• “the ability to do real-time measurements and the possibility to do a fast screening”
• “because it is fast and offers new ways to study biological systems”
• “To measure foods volatile composition so a more comprehensive understanding of the sensory qualities of food flavour can be achieved.”
• “PTR-MS provides a fast reproducible response.“
• “we want the film and not only the picture of the biological and atmospheric processes. Also the whole range of VOCs”
• “for the continuous on-line monitoring”
• “high sensitivity to required products”
• “high sensitivity to certain compounds and reliable”
• “wide range of compounds which can be measured, fast response, precision”
• “Relatively robust”
• “For it's very low limit of detection (LoD ~ 5 ppt) of VOCs which is necessary for ambient monitoring and trying to identify the potential source/s of the detected VOCs. Continuous monitoring of the air enables temporal resolution of air contamination events and allows characterisation of the ambient air in specific localities.”
• “Because of the capability to analyze flavour compounds during eating, chewing and drinking of food and beverages in real time.”
• “Because it is sensitive, robust and well suited for real time measurements”
• “for its sensitivity and its fastness”
• “Because it allows in vivo fast monitoring&detection of VOC compounds with high sensibility”
• “PTR-MS can measure VOCs in nearly real time with high sensitivity.”
• “PTR-MS has very high sensitivity of detection, is easy to use, and has a much broader range of application.”
• “velocity and preservation of the sample that can be used for further analyses”
• “it depends on the application: for real time monitoring or for absolute quantification of specific compounds absolutely yes”
• “Fast, sensitive and able to measure the isotopes.”
• “Because we need the fast response time which other sensors do not allow”
• “easy to handle, good sensitivity”
• “Generally competent support for technical problems”
• “It is excellent for a wide range, and trace levels of VOC's”
• “Very fast response time, good sensitivity, less data treatment than GC for recovery of change in headspace profile over time”
• “high sensitivity and large number of VOC species detected”
• “compact masspec”
• “because is an online measurement and you can identify a high range of masses”
• “Monitoring on-line of aroma compounds”
• “Fast, stable and reproducible machine. Good range linearity and no cross-artefact with major compound analysed.”
• “high sensitivity, low fragmentation of target molecules, high reproducibility of results”

Click here to learn what our customers think of our support.

*The survey was started 15/07/07. Questionnaires were sent to 197 people. 40 filled-out questionnaires were returned until 08/08/07.