Photosynthesis Meters

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Plant Photosynthesis Meter

SISC0-PM-AW-308D

This photosynthesis meter uses a closed-circuit measurement method to detect plant leaf temperature, light intensity, and CO2 concentration, and calculates the plant's photosynthetic rate. Equipped with high-precision sensors and probes, the portable photosynthesis meter can display and process relevant data in real time. The CO₂ analysis range is 0-3000 ppm, with a resolution of 0.1 ppm and an accuracy of ±3 ppm. The photosynthesis analyzer's screen features adjustable gas flow rate for precise control. This plant photosynthesis meter is widely used in photosynthesis experiments in many disciplines, including biology, agronomy, horticulture, and forestry.

$4,354.15

A photosynthesis meter is an instrument specifically designed to study the photosynthetic process of plants. It primarily measures the net photosynthetic rate of plant leaves under specific environmental conditions, and can also indirectly reflect a plant's growth status, photosynthetic efficiency, and responsiveness to environmental factors. This plant photosynthesis meter is widely used in plant physiology research, crop breeding, greenhouse management, and ecological environment monitoring.

How does a photosynthesis meter work?

Photosynthesis meters typically operate on the principle of gas exchange: a leaf is fixed in a sealed leaf chamber, and air flows past and behind the leaf. An infrared CO₂ analyzer inside the digital photosynthesis meter measures the change in CO₂ concentration between the incoming and outgoing air, thereby calculating the plant's net photosynthetic rate. Simultaneously, the photosynthesis meter measures environmental parameters such as leaf temperature, air temperature and humidity, and photosynthetically active radiation (PAR). Using this data, the plant photosynthesis meter can comprehensively assess photosynthetic intensity and stomatal behavior, helping researchers analyze the physiological responses of plants under different environmental conditions.

What factors affect the measurement results of a photosynthesis meter?

Common measurement parameters for photosynthesis meters include:

Net photosynthetic rate (Pn)
Stomatal conductance (Gs)
Transpiration rate (Tr)
Leaf and ambient temperature
Leaf and air humidity
Photosynthetically active radiation (PAR)

Main factors affecting measurement results include: leaf placement and sealing (leaf area and leaf chamber tightness), ambient light intensity and PAR setting, leaf temperature and humidity conditions, and stability of air CO₂ concentration. Improper operation, such as leaves not being completely flat, inadequate sealing of the leaf chamber, or uneven lighting, may lead to lower, higher, or even negative values. Therefore, ensuring standardized measurement procedures is crucial for obtaining accurate and reliable data.