The Standard in

Plant Stress Measurement



Field Portable, highly automated photosynthesis system with micro-climate control and a battery charge that lasts all day.

The LCpro-SD offers laboratory grade experimental performance in a truly portable device. Featuring ADC's highly accurate miniaturized infrared gas analyzer, the LCpro-SD is, at 4.5kg or 10lbs., less than half the weight and half the size of conventional systems offering full environmental control. Ideal for A/Ci curves, and A/Q curves, measuring step sequences are full programmable, Both data and graphic information are displayed during the measuring process. Built with over 43 years of experience making photosynthesis measuring instrumentation. ADC was responsible for building the first commercially available photosynthesis system in 1973.


  • Very Easy to use - automated IRGA zero calibration and other automated housekeeping functions allows reliable use with minimal training
  • Measures CO2 to  +/-1 μmol or +/- 1 ppm
  • Measures H2O to +/- 1 mmol or 1000 ppm
  • Fully programmable environmental control, allows, control of Actinic light, Temperature, Humidity, and CO2 levels.
  • Temperature control is possible to +/- 14oC from ambient.
  • Humidity control is possible above ambient, at ambient, as well as below ambient.
  • Control of CO2 from 0-3000 μmols
  • Q or PAR from 0 to 2,000 μmols
  • The IRGA is near the measuring chamber
  • Battery charge life - at least 8 hours and up to 16 hours
  • USB and removable SD data card data output
  • Accessory chambers for conifers, narrow leaves, Arabidopsis and small leaves, soil respiration, & whole plant Arabidopsis
  • Integrated chlorophyll fluorescence option available with absorptance measurement and FM' correction option.
  • The LCpro-SD is a portable photosynthesis measuring system with fully programmable microclimate control. This system is very easy to use, yet repeatable, accurate and reliable. CO2 is measured to 1 ppm or 1 μmole, and H2O is measured to 0.1 mbars or 1 mmole. The range for CO2 measurement is 0-3000 μmoles, and the range for H2O measurement is 0-75.5 mmoles. The system has an auto-zero calibration that occurs after every photosynthesis measurement. It is ideal for A/Ci curves, light curves, and temperature curves. Measured values are corrected for atmospheric pressure and IRGA drift. Various special measuring chambers are available for Arabidopsis, conifers, narrow leaves, and soil respiration. Now available with a white light LED source that that allows chloroplast migration, and the full effects of the xanthophyll photoprotective cycle. Leaf temperature and PAR are measured while battery charge life is about 16 hours.

  • Measurement range and technique:



    0-3000 ppm, 1 ppm resolution.

    Infrared gas analysis, differential open system, auto zero, automatic atmospheric pressure and temperature compensation.


    0-75 mbar, 0.1 mbar resolution.

    Two laser trimmed, fast response water vapor sensors.


    0-3000 μmols /m2 /sec.

    Silicon photocell.

    Chamber temperature:

    -5 to 50 degrees C. Precision thermistor  +/- 0.2oC accuracy.

    Direct Leaf temperature:

    -5 to 50 degrees C.

    Self positioning microchip thermistor/Energy balance/ manually positioned thermistor.

    Flow rate to Leaf Chamber:

    100 to 500 ml/min.

    Automatic environmental control:



    Internal LCpro-SD menu driven software. Automatic and independent control of environmental conditions within the leaf chamber. For automatic response curves, sequential control levels and dwell times may be set.


    Up to 2000 ppm CO2, by integral elevated CO2 supply system.


    Above and below ambient (dependent on ambient conditions), by on-board self-indicating conditioning chemicals.


    Micro-peltier element. Broad chamber typically +/- 14 degrees C from ambient. Other chambers with temperature control better than +/- 10 degrees C from ambient.


    Up to 2000 μmols/m2 /sec, (conifer up to 1500 μmols/m2 /sec) by high efficiency, low heat output, mixed red/blue LED array unit.

    Warm up time:

    5 minutes @ 20 degrees C.


    240 x 64 dot matrix super twist graphic LCD.

    Recorded data:

    Removable SD cards typically store 16 million sets of data on a 1 Gb card.


    7.0Ah 12V lead acid battery. Up to 16 hours between charges.

    Battery charger:

    Universal input voltage intelligent control.

    Data output:


    SD data card:

    1-2 Gigbyte

    USB connection:


    Functions as a mass storage device.

    RS232 output:

    9 Pin "D" type.

    User-selectable rates of up to 230,400 BAUD for computer or printer connection.

    Operating temperature range:

    5 to 50 degrees C.

    Dimensions H x W x D:

    Console: 230 x 110 x 170 mm.

    Plant Leaf Chamber: 300 x 80 x 75 mm.


    Console:  4.5kg.

    Plant leaf chamber: 0.8kg.

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Opti-Sciences, Inc.     8 Winn Avenue      Hudson NH 03051       USA      (603)883-4400


Opti-Sciences, Inc.

8 Winn Ave

Hudson, NH 03051, USA

Phone: (603) 883-4400

Fax: (603) 883-4410