Oxygen Measurement Overview
Hansatech Instruments Ltd Oxygen Electrode Measurement Systems are built around the proven S1 Clark-type oxygen electrode and are designed for research and teaching applications in photosynthesis, respiration, bioenergetics, and cellular metabolism. These research-grade instruments enable precise measurement of oxygen evolution and oxygen uptake across a wide range of biological and environmental samples.
- Liquid-phase Oxygen Measurement Liquid-phase systems are used to measure oxygen evolution from chloroplasts, algae, and other photosynthetic materials, as well as oxygen uptake during cellular and mitochondrial respiration. Applications include plant physiology, photosynthesis research, algal studies, bioenergetics, and investigations of cellular metabolism. Modular system configurations provide flexible, user-friendly solutions for both advanced research laboratories and teaching environments.
- Gas-phase Oxygen Measurement Gas-phase systems measure oxygen evolution and oxygen uptake within a sealed sample chamber under controlled conditions. Designed primarily for leaf-disc measurements, these systems support studies of photosynthetic performance and respiration in leaves, roots, lichens, mosses, conifer needles, seeds, and other plant materials. Their versatility makes them valuable tools for plant physiology, ecophysiology, and environmental research applications.
Liquid-Phase Oxygen Measurement Systems

Oxytherm+ P
The Oxytherm+P is an advanced oxygen measurement system designed for studies of photosynthetic oxygen evolution in liquid-phase samples. Built around the proven S1 Clark-type oxygen electrode, the system combines precise oxygen measurement, integrated illumination, and solid-state temperature control in a compact, easy-to-use platform. Precision sample and sensor temperature control between 3–40°C is provided via an integral Peltier element. Chamber temperature is configured directly within OxyTrace+ software and displayed on the front-mounted LCD. A tricolour LED provides immediate visual indication of cooling, heating, or stable operating conditions. Dual software-controlled white LED light sources provide uniform illumination of liquid samples up to 4,000 μmol m⁻² s⁻¹, enabling accurate measurement of photosynthetic oxygen evolution across a wide range of experimental conditions. OxyTrace+ software allows automated execution of user-defined light response protocols and provides tools for calculating apparent quantum yield, streamlining both data collection and analysis.


Chlorolab 2+
Chlorolab 2+ provides a sophisticated system for the advanced study of respiration and photosynthesis from liquid samples under automated illumination from a choice of red (LED1/R), blue (LED1/B), or white (LED1/W) high intensity LED light sources. OxyTrace+ Windows® software provides the system the ability to automate the acquisition of oxygen evolution/uptake rate over a user-defined light intensity rate and to determine the apparent quantum yield.

Chlorolab 3+
Chlorolab 3+ provides a sophisticated system for the advanced study of respiration and photosynthesis from larger volume liquid samples (to 20ml) under automated illumination from red (660nm) LED light. Utilizing OxyTrace+ Windows® software, the system provides the ability to automate the acquisition of oxygen evolution/uptake rate over a user-defined light intensity rate and to determine the apparent quantum yield. Chlorolab 3+ is particularly suitable for macroalgal studies in sea water including P/I curves by automated determination of oxygen evolution and uptake rates at a range of user-defined light intensities to determine apparent quantum yield.
Gas-Phase Oxygen Measurement Systems


Leaflab 2+
Leaflab 2+ offers the capability for advanced studies of photosynthesis and respiration from leaf-discs. The system provides computerized control of the oxygen signal with automated control of a red (660nm) LED light source array. OxyTrace+ Windows® software functions provide automated measurement of the rate of oxygen evolution/uptake at a range of user-defined light intensities to determine apparent quantum yield.





