Version:
Gas-Exchange Chamber

The Gas-Exchange Chamber 3010-GWK1 is designed to investigate medium-sized samples like small branches, big leaves, or fruits under well-defined climate controlled conditions. To provide this, the 3010-GWK1 chamber has a highly efficient temperature control, a transversal fan for fast ventilation, and pneumatic connectors for air-supply.
Internally there are sensors to accurately monitor temperature at three sites, air humidity, and PAR (photosynthetically active radiation). Externally the chamber has additional sensors for temperature and PAR.
The LED-Panel RGBW-L084 provides illumination for the Gas-Exchange Chamber 3010-GWK1. It has a densely packed array of high-power color-LEDs for uniform light distribution. Individual adjustable colors Red, Green, Blue and White exhibit together a maximum output of 2000 μmol s-1 m-2 or better.





For CO2 gas-exchange measurements, the chamber can be operated as part of the the GFS-3000 in replacement of the Standard Measuring Head 3010-S. Otherwise the chamber can be operated directly by a computer using an optional interface. On request, the top part of the chamber will be manufactured to match the requirements for particular samples.
Please consider using Gas-Exchange Chamber 3010-GWK1 in combination with the GFS-3000, that the maximum flow of the GFS-3000 is 1.9 l/min. Leaf samples producing too much humidity can limit the systems capabilities.
The 3010-GWK1 also facilitates the option of studying spatially resolved chlorophyll fluorescence under defined conditions, because its sample area matches the imaging area of the IMAGING-PAM M-Series MAXI version.
The 3010-GWK1 chamber is equipped with four temperature sensors: Three Pt100-type sensors measuring temperature of inside air, near the cooling elements and externally. The fourth temperature sensor is a thermocouple for leaf temperature measurements.
Temperature control can be switched between three modes: Constant temperature of chamber air, constant leaf temperature, or temperature variation parallel to ambient temperature with an adjustable offset. Temperature profiles can be realized with user-programs. Due to the highly efficient Peltier technology, the cuvette temperature can be regulated fast and accurately.

The 3010-GWK1 chamber has two sensors for photosynthetic active radiation (PAR): A cosine corrected sensor (MQS/B-GWK1) measures ambient PAR at sample level outside the chamber, and a special miniaturized sensor measuring PAR inside the chamber.
A maintenance-free sensor measuring the relative humidity with an accuracy ±1.5% r.h. is located inside the gas-exchange chamber.
The gas-exchange chamber features a transversal fan for effective ventilation. Its speed is adjustable in 5 steps.
The 3010-GKWK1 chamber can be controlled by the GFS-3000 or by a laptop using an optional interface. In both configurations, the 3010-GKWK1 chamber requires its own power supply.
Source: Google Scholar.
Keywords: (Walz OR Waltz) Effeltrich.
Date: June 22, 2026.
Source: Google Scholar.
Keywords: (Walz OR Waltz) Effeltrich.
Date: June 22, 2026.
Heat-induced F0-fluorescence rise is not an indicator of severe tissue necrosis in thermotolerance assays of young and mature leaves of a tropical tree species, Calophyllum inophyllum.
Photosynthetica 63: 46-50
Trees use exogenous sugars for growth, but excess triggers negative feedback reducing photosynthetic carbon gain.
Tree Physiology 45: tpaf092
Contrasting photosynthetic, stomatal, and mesophyll mechanisms drive common reductions in leaf water-use efficiency under blue light.
Journal of Experimental Botany 18: 5512-5527
Analysis of leaf CO2 assimilation, CO and CH4 release under different environmental settings.
bioRxiv
Heat tolerance of a tropical-subtropical rainforest tree species Polyscias elegans: time-dependent dynamic responses of physiological thermostability and biochemistry
New Phytologist 241: 715-731
A novel application of laser speckle imaging technique for prediction of hypoxic stress of apples.
Plant Methods 20: 147
Contactless estimation of apple fruit respiration rate using machine learning models based on laser speckle imaging
Postharvest Biology and Technology 207: 112626
Low oxygen environment effect on the tomato cell wall composition during the fruit ripening process.
BMC Plant Biology 24: 503
Uncoupling of stomatal conductance and photosynthesis at high temperature: mechanistic insights from online stable isotope techniques.
New Phytologist 241: 2366-2378
Dry inside: progressive unsaturation within leaves with increasing vapour pressure deficit affects estimation of key leaf gas exchange parameters.
New Phytologist 244: 1275-1287
The chlorophyll fluorescence parameter FV/FM correlates with loss of grain yield after severe drought in three wheat genotypes grown at two CO2 concentrations.
Plants 12: 436
Contrasting response of water use efficiency to soil moisture availability: from leaf to ecosystem in an arid oasis.
Ecological Indicators 147: 109964
Adapter IMAG‐MAX/GWK1 for IMAGING-PAM (MAXI-Version) on Gas Exchange Chamber (3010-GWK1)
Adapter Plate with legs and eye protection for positioning IMAG-MAXI Head on 3010-GWK1
LED-Panel fitting to the gas exchange chamber 3010-GWK1: Illuminated area 14 cm x 12 cm.
LED Colors: red, green, blue and white; maximum output (all colors together): 2000 μmol m-2 s-1 or better.
Air cooled; with separate power supply. Colors can be mixed with red, green, blue, and white in steps of intensity 0 to 100 or more; total intensity can be chosen in steps of 0.1%; operation with GFS-Win software via RS485 connector.
Blue: 455 ±10 nm, HBW (half bandwidth) 440 - 460 nm
Green: 525 ±10 nm, HBW 500 - 545 nm
Red: 625 ±5 nm, HBW 620 - 640 nm
White: 450 ±10 nm, HBW 435 - 460 nm; second peak at 590 ±25 nm, HBW 510 - 640 nm with tail up to 800 nm
± 10% within the 14x12 cm area or ± 3 μmol m-2 s-1 (whatever is bigger).
PAR sensors with multiplier between -50 and -800 μmol m-2 s-1 per μA result in a range of 0 to 6400 μmol m-2 s-1, resolution: 1 μmol m-2 s-1
10 A slow-blow fuse, 5x20 mm
16 V, 8 A
AC Power Supply 3020-N for laboratory operation
± 10% within the 14x12 cm area or ± 3 μmol m-2 s-1 (whatever is bigger).
27 cm x 19 cm x 13 cm L x W x H
The LED-Panel RGBW-L084 is designed with a densely packed array of high-power color LEDs that facilitates measurements under a variety of illumination options. The colors, Red, Green, Blue, and White can be adjusted independently with a maximum output (all colors together) of 2000 μmol m-2 s-1 PAR or better.
The LED-Panel RGBW-L084 fits perfectly on top of Gas-Exchange Chamber 3010-GWK1 with an illuminated area of 14 cm x 12 cm. At the side it provides an additional socket for the connection of a PAR sensor. The LED-Panel RGBW can be operated via the GFS-Win software in combination with a 3010-GWK1, GFS-3000 or stand-alone using the Interface 3010-I/Box.
Changing light conditions with LED-Panel RGBW-L084.
When connected to the GFS-3000 system, the Gas-Exchange Chamber 3010-GWK1 can be operated as part of the GFS-3000 gas exchange system, which allows operation via the internal panel-PC or via an external computer with the GFS-Win software as usual.
Alternatively, a separate interface can be connected to the 3010-GWK1 chamber, which then allows direct computer-operation, independent of the GFS-3000, but still with the GFS-Win software.

