Plant Photosynthesis Meter
Portable plant photosynthesis meter measuring Pn, Gs, Ci and WUE with controlled light and CO₂. 0–2500 ppm CO₂, 0–3000 μmol PAR.
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- Configured during quote
- SKU family
- AGR-0023
- Sizing
- Model-specific dimensions confirmed from the selected configuration
- Ordering
- Quote-reviewed before fulfillment
- Category
- Agriculture & Food Science
- Build notes
- Confirm accessories, station layout, and support needs before purchase
The Plant Photosynthesis Meter is a portable gas-exchange system for measuring leaf photosynthesis directly in the field or greenhouse. It combines infrared CO₂ sensing, a PAR quantum light sensor, and integrated temperature and humidity modules so you can quantify how a plant assimilates carbon under real or controlled conditions.
From a single clamp-on leaf-chamber measurement, the instrument derives the core photosynthesis parameters researchers compare: net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO₂ concentration (Ci), and instantaneous water-use efficiency (WUE). A built-in light-control module with red (660 nm) and blue (453 nm) LEDs and an optional CO₂ injection supply let you hold light and CO₂ steady, so measurements are repeatable across leaves, treatments, and time points.
The CO₂ channel reads 0–2500 ppm and the quantum sensor covers 0–3000 μmol·m⁻²·s⁻¹ across the 400–700 nm photosynthetically active range, with leaf and air temperature, humidity, gas flow, and chamber pressure all logged alongside each reading. The 2 × 3 cm leaf chamber suits most broadleaf samples.
Typical applications include crop physiology and yield research, photosynthesis and stress-response studies, plant-breeding screens, and teaching labs that need field-portable gas-exchange data without a benchtop system.
CO₂ Sensor Range
- 0–2500 ppm (resolution ≤0.1 ppm)
PAR Quantum Sensor Range
- 0–3000 μmol·m⁻²·s⁻¹ (400–700 nm)
Leaf Temperature Range
- 0–45°C (±1°C)
Air Temperature Range
- 0–45°C (±1°C)
Humidity Range
- 0–75% RH, non-condensing (±5%)
Gas Flow Range
- 0–1.0 L/min
Light Control Module
- 0–2000 μmol·m⁻²·s⁻¹; red 660 nm, blue 453 nm
Leaf Chamber Area
- 2 × 3 cm
Chamber Pressure Range
- 15–115 kPa (resolution ≤0.1 kPa)
Measured Parameters
- Net photosynthetic rate (Pn), Stomatal conductance (Gs), Intercellular CO₂ (Ci), Water-use efficiency (WUE)
What does the Plant Photosynthesis Meter measure?
It measures leaf gas exchange and derives net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO₂ concentration (Ci), and instantaneous water-use efficiency (WUE), along with CO₂, PAR light, leaf and air temperature, humidity, gas flow, and chamber pressure.
Can I control light and CO₂ during a measurement?
Yes. A light-control module provides red (660 nm) and blue (453 nm) LED illumination up to 2000 μmol·m⁻²·s⁻¹, and an integrated CO₂ injection supply lets you hold CO₂ steady, so you can run controlled response measurements rather than only ambient readings.
What is the CO₂ and light measurement range?
The CO₂ channel reads 0–2500 ppm and the PAR quantum sensor covers 0–3000 μmol·m⁻²·s⁻¹ over the 400–700 nm photosynthetically active band.
What leaf size does the chamber accept?
The leaf chamber measuring area is 2 × 3 cm, which suits most broadleaf samples; leaf temperature, air temperature, and humidity are monitored within the chamber during each reading.
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