» ADC BioScientific    Manufacturers of instrumentation for measuring photosynthesis, transpiration, chlorophyll fluorescence, sap flow, and gas exchange.    http://www.adc.co.uk/

» Apogee    Products used to measure radiation and leaf temperature, ordering information, and research and development being undertaken.    http://www.apogee-inst.com/

» CID, Inc.    Manufacturers of portable, photosynthesis analysis systems and miniature spectrometers.    http://www.cid-inc.com/

» EARS Plant Photosynthesis Meter    Specifications and applications of the EARS-PPM, a modulated, saturation pulse chlorophyll fluorometer.    http://www.ears.nl/ppm/

» Hansatech Instruments Limited    Manufacturers of oxygen electrodes and chlorophyll fluorescence systems for the measurement of cellular respiration and photosynthesis in the field or laboratory.    http://www.hansatech-instruments.com/

» LI-COR Environmental Research and Analysis Division    LI-COR Environmental was founded in 1971, and is a leading manufacturer of electronic instrumentation for environmental, agricultural and ecological research.    http://env.licor.com/

» PMS Instrument Company    Manufacturer of pressure chamber instruments for measuring plant water potential and irrigation scheduling. Contains product information as well as tutorials on using a pressure bomb.    http://www.pmsinstrument.com/

» PP Systems    Manufacturer of portable photosynthesis/respiration measurement instrumentation, CO2 and H2O Infrared Gas Analyzers for lab and field, portable spectrometer, and environmental sensors.    http://www.ppsystems.com/

» Physiological Ecology Equipment Manufacturers    Links to suppliers of equipment used by ecophysiologists.    http://www.biology.duke.edu/jackson/ecophys/equipment.htm

» Walz    Producer of sophisticated photosynthesis measuring systems. The product line ranges from PAM Chlorophyll Fluorometers to measuring systems of plant gas exchange for physiological and ecophysiological research.    http://www.walz.com/