The World's Leading PTR-MS Trace Analyzers Company

Compact online VOC detector

Online real-time VOC monitoring
Based on quadrupole MS
Small dimensions and low weight
Accurate quantitative measurement


The PTR-QMS 300 is a very sensitive real-time monitor for volatile organic compounds (VOCs) and can measure concentrations as low as 50 pptv.

Designed as a small and lightweight instrument for mobile air monitoring applications, the PTR-QMS 300 is also very affordable.

We provide flexible inlet solutions such as the integrated multi-position capability and the possibility to optionally upgrade the PTR-QMS 300 with multiplexing and data interface units thus bringing down the costs per sampling point and simplifying the integration in existing monitoring network infrastructure.

For research or laboratory use the PTR-QMS 300 is available as a fully functional entry-level PTR-MS instrument, being operated using the comprehensive IONICON PTR-QMS series software suite, available on an external notebook computer.

Did you know that with a TOF-based VOC monitor you could have many additional advantages? Check out our bestselling PTR-TOF 1000 instrument.

Technical specifications

Mass range 1-300 amu
Resolution < 1 amu
Response time < 100 ms
Turbomolecular pumps 2
Limit of detection (LoD),
60s integration time

50 pptv for selected substances (e.g. Toluene, Xylene, m/z 147)

Linearity range 50 pptv - 10 ppmv
Adjustable flow 50 - 500 sccm
Inlet system heating range up to 180°C
(multi-position capable)
Reaction chamber heating range 40 - 130°C
Power supply 100-230 V, max 1200 W
Dimensions (w x h x d) 56x61x53 cm (22,1x24,1x20,9 in.)
Weight 80 kg (177 lb)
Main interfaces

- Touchscreen display
- Ethernet 10/100MBit RJ45 (TCP/IP)
- 8x DO, 4x DI, 4x AI, 4x AO

Optional features

- Embedded industrial PC
- Individually tailored software package
- Multiplexing units
- Data interfaces (digital/analog I/O)
Switchable Reagent Ions (SRI): H3O+, NO+ and O2+ as precursor ions

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