Walz Mail Group

If you are interested to obtain first hand information on our most recent products, accessories and software updates, please join the “Walz Mail Group”.


IMAGING-PAM goes outdoors: The new MOBILE Version

The MOBILE version of the IMAGING-PAM has been specially developed for chlorophyll fluorescence imaging in the field. New field-tested components and excellent ergonomic properties characterize the system. The newly developed dark acclimation box permits Fv/Fm measurements of small plants, ground vegetation, and photosynthetic crusts.

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Walz tutorial on PAM fluorescence and saturation pulse now online

The famous TEACHING-PAM text book by Dr. Schreiber now has a successor. The new tutorial describes experiments with the JUNIOR-PAM. The topics include optimizing fluorometer settings, understanding basic photosynthetic properties, as well as examining dynamic plant behavior under stress.

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WALZ system for monitoring photosynthesis has been put online

A monitoring system comprising four MICRO-HEAD/3B fluorometers and a MONI-DA data acquisition system is sending data via modem to the Walz website. Visitors of the website can view the most current data plus the record of the latest 24 hours. To get an impression on the wealth of information created by long-term monitoring of photosynthesis, download the measurements of the last month.

See Live Data

MICRO-PAM, a monitoring system with lightweight and compact PAM measuring heads

The MICRO-PAM system has been developed on the basis of the profound experience acquired with the established MONITORING-PAM system. Its compact measuring heads makes the MICRO-PAM system ideally suited for small samples. Each measuring head is equipped with a temperature and a humidity sensor; a precise cosine-response PAR sensor can be readily attached. For details, see the MICRO-PAM website which also includes a comparison between the MICRO-PAM and MONITORING-PAM systems in the section “General Features”.


PHYTO-II/FT: Flow-Through Cuvette for PHYTO-PAM-II Compact Versions

With the help of PHYTO-PAM-II, photosynthetic activity of four different algae groups can be determined in mixed populations. Manual sampling can sometimes be difficult and time consuming. With the new add-on cuvette for PHYTO-PAM-II Compact units (PHYTO-II/FT), sampling can now be done in flow-through mode.

Pump your sample through the newly designed flow-through cuvette, using a standard 0-10 V controllable laboratory peristaltic pump, stop the flow to perform a measurement and start pumping again. Automate such procedures via Phyto-Win-3 measuring software.


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

DIVING-PAM-II/O2: Measuring oxygen concentration in situ

The concentration of oxygen in water is an important factor for aquatic life, not only for heterotrophs but also for photosynthetic organisms. It has been suggested that low oxygen concentrations favor blue-green algal blooms. The possible effect of dissolved oxygen content on the photosynthetic productivity of reef communities has been discussed. Therefore, to measure the oxygen concentrations to which plants and algae are exposed in nature, we have developed the Underwater Oxygen Sensor DIVING-PAM-II/O2. The sensor is an accessory of the underwater fluorometer, DIVING-PAM-II.

DIVING-PAM-II Accessories

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.


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

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

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.

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

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.


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.


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.

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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.


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.


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