MultispeQ v2.5

The MultispeQ v2.5 is PhotosynQ’s upgraded handheld plant phenotyping instrument, combining chlorophyll fluorescence, absorbance-based spectroscopy, environmental sensing, and cloud-connected data collection in one portable device.

It is one of the most affordable ways to bring PAM-style chlorophyll fluorescence and field plant phenotyping into a lab, classroom, breeding program, or field research workflow.

Built for field, greenhouse, classroom, and lab use, MultispeQ helps researchers measure photosynthetic performance, detect plant stress, compare genotypes, and collect large-scale plant physiology datasets through the PhotosynQ platform.

The v2.5 upgrade includes updated LEDs at 730 nm, 820 nm, 850 nm, 950 nm, amber, and NeoPixel channels, improved light guides, enhanced infrared capabilities, and Gold Standard QC transparency — all designed to improve optical consistency, repeatability, and confidence in field data collection.

MultispeQ Features

Case

• 5500 mAh internal battery, will last all day for typical use

• Ergonomic design, right or left handed

• Measure cuvette (algae) or leaf seamlessly

Sensors

• Available LEDs and detectors for spectroscopy

• LEDs: 448 nm, 530 nm, 590 nm, 655 nm (2x), 730 nm, 810 nm, 880 nm, 950 nm (2x)

• Detectors: 400-700 nm, 700-1150 nm

• Automatically adds location and time stamp to all measurements

• Ambient temperature ± 0.5 °C

• Contactless leaf temperature ± 0.1 °C in the 30 - 40 °C range

• Relative humidity ± 3 %

• Barometric pressure ± 0.25 %

• Measure leaf angle (wilt) and cardinal direction

• External sensor connector for ultimate modability

Usability

• Automatic firmware updates through Mobile or Desktop App

• Optimized power management to reduce overall power consumption

• Collected measurements will be cached, allowing you to take measurements in remote locations.

• Data can be easily viewed and analyzed in your browser.

• Libraries for advanced analysis in R or Python are available.

Measurements

• Measure fluorescence base parameters for plants and algae including ΦII, LEF, NPQ, qE, qI, qL, qPand absorbance based parameters like vH+, gH+, ECSt

• Record abiotic factors including ambient temperature, relative humidity, barometric pressure and altitude as well as contactless leaf temperature, leaf angle and leaf direction

• Flexible, system to create your own measurement protocols and code to analyse your data

• Port for adding additional sensors (USB 3.0)