Measures local tissue saturation (TSI), as well as oxy-, deoxy- and total hemoglobin.


The PortaLite based on PortaMon technology and it is ideally suited for measurements in the brain during everyday activity. The small and flexible probe is easy to attach and connected with one wire to the portable battery housing. It is a highly portable device and currently one of the smallest and most portable brain oxygenation monitoring device on the market. Therefore, the PortaLite is utilised in a wide range of applications e.g. functional studies, sports science and rehabilitation. The system has three light sources and is therefore capable of measuring tissue saturation index (TSI), which is an absolute measure of oxygenated hemoglobin. Furthermore, the Portalite uses near infrared spectroscopy (NIRS) to measure oxy-, deoxy-, and total hemoglobin concentrations at capillary level. 


  • Non-invasive
  • Light, easy and portable
  • In the lab and in the field
  • Continuously
  • Affordable
  • Without the need for special infrastructure
  • Without specially trained personnel

NIRS Applications

The PortaLite is an easy to use and truly portable oxygenation monitoring device. With the PortaLite you are enabled to do online measurements using bluetooth or offline measurements through on board data collection. This makes it a perfect device for measurements both in the lab and in the field.  

The PortaLite has a flexible sensor to fit the curvature of the head, or smaller muscles like the intercostal or trapezius muscle to offer even more possibilities. Before the Portalite was developed, researcher took the Oxymon up to great heights to measure the effect of hypoxia (Rupp 2013) or zero gravity (Brümmer 2011) on the brain; with the introduction of our portable NIRS devices this can now be done a lot easier, with the same data quality.

PortaLite publications

For prefrontal single channel measurements (Billaut 2010, Olin, 2011) brain oxygenation can be studied a lot easier during exercise than with the big and non-portable NIRS systems. The PortaLite has been used by our customers during dual tasking (Maidan 2015), to detect epileptic seizures (Jeppesen 2014) and to measure the effect of hypoxia while when climbing the highest volcano of the world (Burtscher and Koch 2015).

Main applications

  • Brain oxygenation monitoring
  • High altitude research
  • Sports science
  • Functional studies 
  • Cerebral studies

NIRS user cases

PortaLite research package

What's in the box?

  •  1x PortaLite 
  • 1x Laptop
  • 1x strong and sturdy (micro) Pelicase
  • 1x License key
  • 1x Bluetooth dongel
  • Oxysoft, data analysis software
  • Batteries and charger
  • Stickers and bandages
  • Dark cloth or bandana
  • User Guide

Technical specifications

Dimensions, weight and other details

PortaLite Mini

For pediatric research we also offer the PortaLite Mini.

NIRS - add ons

Would you like more than 1 NIRS device? You can measure with multiple (different) Artinis NIRS devices at the same time. All data is synchronised and stored in one datafile. We also offer NIRS EEG packages.


Combine the PortaLite with the PortaSync - a handheld device for synchronisation of the different types of instrumentations and the data files they produce.

Artinis NIRS products are intended to be used for research applications only. Our products are not sold as Medical Device as defined in EU directive 93/42/EEC. Our products are not designed or intended to be used for diagnosis or treatment of disease.