Opti- Science The Plant Stress Kit Opti- Science The Plant Stress Kit Opti- Science The Plant Stress Kit
Opti- Science The Plant Stress Kit Opti- Science The Plant Stress Kit Opti- Science The Plant Stress Kit

The Plant Stress Kit

The Y(II) meter was designed to provide an inexpensive way to measure the fast light adapted Y(II) or  ΔF/FM' protocol and to make it available to more people that need it.

Crops | Photosynthesis, Chlorophyll & Respiration | OptiSciences
  • The Y(II) meter may be purchased separately from the Plant Stress Kit
  • Y(II) measurement & ETR measurement can be corrected for leaf absorptance
  • Leaf absorptance measurement including leaf transmittance using RGB sensors
  • PAR measurement
  • Non Contact Leaf temperature measurement averaged over a large area
  • FM' correction option at high actinic light levels, according to Loriaux 2013
  • Diurnal monitoring capability designed for growth chamber work. It allows measurement day and night. Useful for laboratory work.
  • Relative humidity sensor
  • USB transfer of comma delineated files to Excel ® or other spread sheets.
Fast  measurements Y(II) or ΔF/FM' with the option for FM' correction according to Loriaux 2013 included. ETR, PAR, leaf temperature, relative humidity, leaf absorptance, FS, FM' and FT.
Monitor mode Measures the same sample for months at a time, using a USB battery pack or mains current. The monitor is designed for growth chamber, or laboratory work but not field work. The instrument can be programmed to measure at different intervals during light and dark periods. The monitor mode allows measurement of Y(II) or ΔF/FM', ETR, PAR, leaf temperature, relative humidity and leaf absorptance. From the dark period data, FV/FM, NPQ, Y(NPQ), and Y(NO) can be calculated
Lighting conditions Ambient light only at steady state photosynthesis.
Light sources

White LED saturation flash to 7,000 μmoles.

Choice of red modulated light source (660nm with 690nm cut off filter), or blue modulated light source (450nm) at time of purchase.
Sensors

2 RGB sensors for measurement of leaf reflectance, leaf transmittance, and leaf absorptance, calibrated with standard. From 0 to 100%.

PAR sensor measures from 400nm to 700nm, cosine corrected. +- 2 μmols

Pin Photodiode with a 700nm to 750nm band pass filter.

Relative humidity 0% to 100% +-2%
Power Lithium-ion USB battery pack with 8 hour life. Designed to be carried in a pocket. The unit may be used with any USB compatible battery. The instrument will also run on most mains current USB chargers.
Memory 2 Gigabytes