Aquation offers a range of chlorophyll fluorometers for plant health studies. We also provide field data-logging solutions, and a variety of water quality monitoring solutions both installed and stand-alone.
Classic Fluorometer Series
The Classic Fluorometer Series comprises cylindrical waterproof sensors that either plug into a computer, or connect using a wireless link (particularly useful in wet environments). With Aquation’s easy-to-use software interface, users can quickly start making useful chlorophyll fluorescence measurements.
Classic Fluorometers are available in several forms based on the same Classic sensor design. The Classic Wireless benchtop is shown below:
- Benchtop: this sensor has a flat base for convenient use on a flat surface both indoors or in the field. Available as USB Benchtop or Wireless Benchtop (shown above).
- Standard 3m: this sensor has the cable extending from the base and is designed to be held in place by hand or clamp. The streamlined design is useful in the field. Available as USB Standard 3m or Wireless Standard 3m.
- Standard 50m: similar to the Standard 3m, the cable extends from the base. The standard 50m is water resistant to 50m depth and is designed for use in harsh submerged environments, or for long term immersion. The sensors can be connected directly to the Aquation Submersible Datalogger for use in the field. Available as USB Standard 50m or Wireless Standard 50m
- USB or wireless: The USB connection to the computer is the simplest connection; the Wireless connection enables the computer to be located in a safe, dry location while still enabling measurements to be made.
- SDI-12 FluorMonitor: The SDI-12 connection enables the standard Aquation Fluorescence Sensor to be connected to industrial or process systems such as greenhouses or phenotyping facilities, or any controller/datalogger system that communicates with the SDI-12 protocol – we have called this the FluorMonitor. A simple set of commands are provided, enabling one to interrogate the sensor at any time. Multiple sensors can be operated simultaneously.
The Shutter Fluorometer
The Shutter Fluorometer enables automated dark-acclimation of samples at any time, and for any duration. This unique features allows one to distinguish the different types of photosynthetic stress that a plant is experiencing during the day, and even determine the relative proportion of each of these stressors. While the Shutter Fluorometer was originally designed to operate underwater to 50 m depth, it is equally at home in on dry land. Both Stainless Steel and Acetal versions are available.
The Submersible Datalogger
The Submersible Datalogger is a rugged multichannel datalogger with very low power consumption when resting between measurements. It can operate any Aquation fluorescence sensor. It’s rugged design and water resistance to 50m make it an ideal choice for difficult field applications where other dataloggers fail. Both Stainless Steel and Acetal versions are available. The image above illustrates the Submersible Datalogger (left) operating two Shutter Fluorometers and one Classic Standard 50m Fluorometer.
The Submersible Light Logger
The Submersible Light Logger is a rugged three-channel datalogger with very low power consumption when resting between measurements. It is designed to operate LI-COR underwater PAR sensors LI-192 and LI-193 (PAR: Photosynthetically Active Radiation ~ visible light between 400-700 nm). It’s rugged design and water resistance to 50 m make it an ideal choice when continuous underwater light data is required. Three sensors can be deployed simultaneously for measuring water attenuation, downwelling and upwelling radiation. Currently the unit is available in 316 Stainless Steel; an acetal version is available on request. The image above illustrates the Submersible Light Logger (background) operating one LI-COR underwater PAR sensor LI-192.
The Handheld Fluorometer
The Handheld Fluorometer is a convenient version of the Classic Fluorometer series, where the fluorescence sensor is installed on a pistol grip/leaf clip assembly, and is connected to the shoulder-strap mounted Portable Datalogger. One simply clips in a sample leaf with the thumb-operated clip, directs the PAR sensor to the vertical and presses the trigger. The Portable Datalogger takes care of the rest, recording several days worth of chlorophyll fluorescence, PAR and leaf temperature readings. The unique leaf temperature sensor provides direct insight into the effects of temperature on leaf photosynthesis.
The Water Quality Monitoring Platform
The Water Quality Monitoring Platform provides a means of measuring water quality parameters such as temperature, conductivity, pH and dissolved oxygen, and delivering these data to the user in realtime via wireless telemetry. These are custom units – more information available on request.
The Submersible Photosynthesis-Respiration System
The Submersible Photosynthesis-Respiration System measures the in situ rates of photosynthesis and respiration of aquatic plants and animals in submersible chambers. The entire system is fully submersible with sufficient power to operate unattended for at least 24 hours. Additional sensors include irradiance as PAR, temperature, pH and variable fluorescence. Modules comprise one Submersible Datalogger, one Medusa Controller cylinder, two submersible chambers and two sets of sensors and pumps for flushing and stirring. Each Module is designed to be easily carried underwater.
The White RAT leaf absorptance meter
The White Rat leaf absorptance meter enables the easy determination of leaf absorptance, reflectance and transmittance by measuring light passing through, and reflected off, a leaf sample. Modification of the light source spectral emission enables an assessment of the absorptance of various light combinations. Absorptance is a fundamental parameter used to calculate Electron Transport Rate.
The pH Monitor
The pH Monitor measures and records pH in seawater using a fluorescence-based technique.