Walz Mail Group

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GFS-3000 new control unit generation available

The new control unit 3200-C features a new generation of high performance, low weight batteries for power solutions: the eSMART 98 Wh batteries. Use the advantages of the new energy supply: simpler handling, less weight, and longer operation duration without battery change. Also, hot swap and battery storage becomes easier as the integrated capacity indicator shows the charge status of the batteries at all times.

GFS-3000 Control-Unit 3200-C

DUAL-KLAS-NIR went into serial production

The market release of the DUAL-KLAS-NIR spectrophotometer promises to open a new era of PS I research under in vivo conditions. Ulrich Schreiber, monitoring the specific absorbance changes of ferredoxin under various experimental conditions, recently provided evidence that cyclic electron transport around PS I could be measured in plants with C3 photosynthesis using the DUAL-KLAS-NIR.

Read the Open Access paper

PHYTO-PAM-II MODULAR Version available

The PHYTO-PAM-II MODULAR Version is now available providing all advantages of PHYTO-PAM-II instruments. The MODULAR Version additionally features the opportunity to apply the software triggered Miniature Magnetic Stirrer PHYTO-MS to the bottom of the cuvette or to control the cuvette temperature by the Temperature Control Unit US-T.


Prototype of DUAL-KLAS-NIR spectrophotometer completed

Starting from the established DUAL-PAM-100 system, a “Kinetic LED Array Spectrophotometer” (KLAS) has been developed by Christoph Klughammer and Ulrich Schreiber. The device measures fast absorbance changes in the near-infrared range (NIR) concomitantly with green light-excited chlorophyll fluorescence. The ground-breaking system determines simultaneously the redox states of the PS I reaction center (P700), its electron donor plastocyanin, and its electron acceptor ferredoxin.

Read the technical paper in Photosynthesis Research (open access) and then experimental paper in Plant & Cell Physiology.

Walz and LemnaTec address physiological phenotyping

Chlorophyll fluorescence expert Walz GmbH and phenotyping specialist LemnaTec GmbH facilitate physiological measurements in plant phenotyping. By integrating a Walz IMAGING PAM camera into the LemnaTec Phenocenter, chlorophyll fluorescence measurements are enabled as part of an automated plant phenotyping procedure. The Phenocenter is a multi-sensor laboratory phenotyping system that automatically measures plants with different camera types. An adapted version of the approved Walz IMAGING PAM is one of the possible sensors available for the Phenocenter. Other cameras can be visible light and near-infrared cameras together with laser scanners and static fluorescence imaging. The multi-sensor approach enables comprehensive characterization of different aspects of plant phenotypes with particular focus on physiological data derived from chlorophyll fluorescence.

LemnaTec Phenocenter

DIVING-PAM-II: First PAM system with spectrometer

As the first PAM fluorometer, the basic system of the DIVING-PAM-II includes a spectrometer to characterize the natural light environment, and to measure sample reflectance and fluorescence emission spectra. The spectrometer can also be connected to the MINI-PAM-II fluorometer.


in FACE experiment

Sponsored by the LOEWE program for top level research of the German Federal State of Hessen, researchers at Geisenheim University have set up a FACE (Free Air Carbon Dioxide Enrichment) experiment. Goal of research is to understand how future elevated CO2 levels, which drive the global climate change, affect viticulture and horticulture. Continuous recording of photosynthesis by MONITORING-PAM fluorometers provides long-term, time-resolved information on photosynthesis under coming climate conditions.

View first data and pictures –
MONITORING-PAM / Applications

Optimizing Solar Energy Use

The Heinz Walz Company participates as Associated Partner Organization in the EU-funded project Solar Energy into Biomass (SE2B) in which a European wide consortium of renowned scientists cooperates to improve our understanding on how plants transforms sunlight into biomass.

Read more

New MINI-PAM-II Chlorophyll Fluorometer now available

The MINI-PAM-II carries on the success of its predecessor “MINI-PAM” using most modern LED and computer technology. Operation and viewing of data occurs by a touchscreen which is easily readable in the field. Large storage capacity for data and commonly available spare batteries permit long-term research at remote places. A new fully digital leaf clip measures PAR, temperature and humidity.


PHYTO-PAM-II COMPACT Version available

Improved analysis capabilities for algal research. PHYTO-PAM-II COMPACT version features detailed assessment of photosynthetic performance. Due to its high performance, samples from natural sea water up to culture grown algae strains can be analyzed with highest accuracy and consideration of their spectral peculiarities. For mixed algae population, PHYTO-PAM-II provides differentiated, group-divided information about relevant photosynthetic parameters.


Walz IMAGING-PAM Identifies
Herbicide Resistant Weeds

German researchers have developed a breakthrough imaging method permitting rapid detection of herbicide resistant weeds. By measuring the maximum photosynthetic quantum yield of photosystem II (FV/FM), the method is much faster than established standard procedures. To see the Weed Research paper click the following link.


Fluorescence imaging in three dimensional format

In cooperation with the Fraunhofer Institute for Integrated Circuits IIS, the Heinz Walz GmbH has developed a novel fluorometer which combines three-dimensional imaging of plants with spatially resolved analysis of photosynthesis. The device is designed to provide new insights in the complex relation between architecture and productivity of plants.

Sample movies

Gaining New Insights into Coupling of Primary and Secondary Photosynthetic Processes

Brand-new publication in collaboration with Walz! The authors Christof Klughammer, Katharina Siebke and Ulrich Schreiber link light-driven proton fluxes to carbon fixation. They measured simultaneously the electrochromic band shift in chloroplast membranes and CO2 uptake by combining the DUAL-PAM-100 with the GFS-3000 system. The full Photosynthesis Research paper is freely available.


JUNIOR-PAM version with white LED released

In addition to the standard version employing blue light, the JUNIOR-PAM fluorometer is now available with a white LED. Besides different LEDs and filters, the two versions have the same specifications.

JUNIOR-PAM / Blue & White Version

GFS-3000 Control Unit 3000-C:
Almost as Good as New

The upgrade 3000-C/U-LiFe for GFS-3000 Control Unit 3000-C is available now. Experience the advantages such as the graphical color display panel-PC, direct USB stick communication and the enormous flexibility of power options including trouble free shipment of LiFePO4 Batteries. For further information please contact us.

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IMAGING-PAM M-Series features a new CCD-Camera generation

The new CCD camera generation is coupled to the computer via a high speed GigE Vision camera connection providing secure data transfer for all IMAGING-PAM applications. The new 2/3” CCD camera IMAG-K6 inspires by its enhanced NIR sensitivity. To find more information about the IMAGING-PAM M-Series click following link.



A new paper employing the MULTI-COLOR-PAM fluorometer to study destruction of photosystem II by light of different wavelengths has recently been published: Schreiber U, Klughammer C (2013) Photosynthesis Research 114: 165-177. Still available for free download is a related publication by Schreiber et al. (2012).

MULTI-COLOR-PAM / Publications

Bavarian Exports Award Conferred
to the Heinz Walz Company

The government of the Free State of Bavaria and the Bavarian Association of Industry and Commerce has conferred the Bavarian Exports Award to the Heinz Walz Company. Walz was selected because of its longstanding success in providing high-end analytical devices to international scientists in the area of photosynthesis research.


WATER-PAM is operable by WinControl-3 software, the latest version of the WinControl software family. A WinControl-3 manual for WATER-PAM is now available. Also PAM-CONTROL and WATER-PAM manuals are revised and can be downloaded.

WATER-PAM / Downloads

on the Web

An impressive video illustrating in situ investigations of cyanobacterial photosynthesis using a Walz DIVING-PAM fluorometer has been released. The video was recorded during a 2013 research campaign in Greenland which was targeted to photosynthesis of algae on surfaces of submarine mineral formations (ikaide columns). This research campaign was sponsored in part by Walz.

Watch video

Cold Traps and
Measuring Gas Cooler

Both the Cold Traps KF-18/2B and KF-24/6B as well as the Measuring Gas Cooler MGK-1B are the most classical and reliable instruments, exactly controlling the humidity in gas streams. Now their Temperature Controllers TR-KF-18 and TR-KF-24 have been redesigned. They feature a digital regulation and are operated via an integrated panel-PC with comfortable graphic display and touch panel.

KF-18/2B & KF-24/6B  |  MGK-1B

Trouble Free Shipping – New Power Solution for GFS-3000

GFS-3000 can now be powered by LiFePO4 Batteries. LiFePO4 Batteries 3035-A exhibit 47% longer operation time under standard conditions in comparison to the Li-ion Battery 3025-A. LiFePO4 Batteries are environmental friendly, provide easy shipment as they do not exceed 100 Wh and are expandable from 15 to 20 Ah (2 x 7.5 - 10 Ah) exhibiting further 30% operation time elongation. An upgrade 3100-C/U-LiFe for GFS-3000 Control Units 3100-C sold with Li-ion Battery 3025-A is available.

GFS-3000 / Control Unit 3100-C

Substantial Progress in Determining
PS I Fluorescence Intensity

By employing a Walz DUAL-PAM-100 system, a French-German team has introduced a straightforward method to determine the level of PS I fluorescence. The method takes into account the various spectral properties of different PAM fluorometers and, thus, yields customized and authentic results: Pfündel EE, Klughammer C, Meister A, Cerovic ZG (2013) Photosynthesis Research 114: 189-206


Launch of High-Intensity Color

The new LED-Panel RGBW-L084 provides illumination for the Gas-Exchange Chamber 3010-GWK1. The densely packed array of high-power color-LEDs distribute uniform light with individual adjustable colors Red, Green, Blue and White.

3010-GWK1 / LED-Panel

Temperature Control Unit US-T
Newly Designed

The new version of the US-T unit uses an external Pt100 resistance thermometer to accurately measure the temperature in suspensions. A powerful Peltier device permits adjusting temperatures within a spread of nearly 30 K. The US-T unit can be utilized in combination with the devices DUAL-PAM-100, MULTI-COLOR-PAM, and PHYTO-PAM.

DUAL-PAM-100 / Accessories
MULTI-COLOR-PAM / Accessories
PHYTO-PAM / Accessories