Plant & Soil > Chlorophyll Fluorescence & Content > Z995 FluorPen PAR

Z995 FluorPen PAR

Starting from $3,320

Z995 FluorPen PAR includes all the features of the Z990 FluorPen with all the extra options i.e. it measures Ft, QY, NPQ, OJIP, and Light Curve (QY).

In additions,  the FluorPen PAR incorporates an integrated Light Meter for direct digital readouts of Photosynthetically Active Radiation (PAR) in the range from 400 to 700 nm, the span in which plants use energy during photosynthesis.  A modified Z995-D is adapted for use with detachable leaf clips for quick dark adaptation of leaves before the commencement of measurements (10 leaf clips included)

PAR is measured as Photosynthetic Photon Flux Density (PPFD), which is indicated by units of quanta (photons) per unit time per unit surface area. The sensor has a uniform response to photons withing the 400-700 nm waveband. Instant readouts are provided as average values of 20 measurements.

Measured Parameters:

  • Ft - continuous fluorescence yield in non-actinic light. Ft is equivalent to Fo if the leaf sample is dark-adapted.
  • QY - Photosystem II quantum yield. In a dark-adapted leaf this is equivalent to Fv/Fm. In a light-adapted leaf it is equivalent to Fv‘/Fm‘.
  • OJIP – Chlorophyll Fluorescence Induction Kinetics
  • NPQ – Non-Photochemical Quenching
  • Light Curve – Adaptation of Quantum Yield to Several Different Light Levels
  • PAR - Photosynthetically Active Radiation

Measuring light power is adjustable by flash duration; actinic and saturating flashes are adjustable from 0 to 3,000 µmol photons/m2/s.

Herbicide Application:

  • Improvement of the effectivity of herbicide application
  • Testing of new herbicides
  • High reduction of herbicide use

Photosynthesis Research:

  • Field measurement
  • Mutant screening
  • Stress detection

Agronomy and Forestry:

  • Mapping by fluorescence parameters
  • Nutrient – Fertilizer analysis

Software :

  • FluorPen 1.0 software (Windows 2000, XP, or higher compatible*)
  • Bluetooth, USB or serial communication
  • Real-time and remote control functions
  • Export to Microsoft Excel
  • GPS mapping plug-in (extra option)

Specifications:

  • Measured Parameters: Fo, Ft, Fm, Fm’, Kautsky induction (OJIP), Fast kinetics
  • Actinic and Saturating Light:Adjustable from 0-3000 uE
  • Measuring Light: Adjustable by duration
  • Detector Wavelength: Range PIN photodiode with 697nm – 750nm bandpass filters
  • FluorPen Software: Windows 2000, XP, or higher
  • Sample Holder: Mechanical leaf clip
  • Bios Upgradeable firmware
  • Communication:  Bluetooth 1.1 or USB/serial port
  • Memory Capacity: Up to 4Mb
  • Internal Data: Logging Up to 100,000 data points
  • Display: 2 x 8 characters LC display
  • Keypad: Sealed, 2-key tactile response
  • Keypad Escape Time: Turns off after 5 minutes of no use
  • Power Save Mode: Autosleep
  • Power Supply: 4 AAA alkaline or rechargeable batteries
  • Battery Lif:e 70 hours typical with full operation
  • Low Battery Detection: Low battery indication displayed
  • Size: 57 x 30 x 120 mm
  • Weight: 180 gOperating Conditions: Temperature: 0 to +55ºC; 32 to +130ºF Relative humidity: 0 to 95% (non-condensing)
  • Storage Conditions: Temperature: -10 to +60ºC; 14 to +140ºF Relative humidity: 0 to 95% (non-condensing)
  • Warranty: 1 year parts and labor
FluorPen data capture screen:Light Curve data capture screen:

NPQ Protocol Includes Five Measurements in Actinic Light and three measurements during dark relaxation.

NPQ_Ln = (FM – FM_Ln) / FM_Ln

NPQ_Lss = (FM – FM_Lss) / FM_Lss

NPQ_Dn = (FM – FM_Dn) / FM_Dn

NPQ data capture screen:

References:

  • Fernandez-Marin B. Becerril JM, Garcia-Plazaola JI.  Unravelling the roles of desiccation-induced xanthophyll cycle activity in darkness: a case study in Lobaria pulmonary: Planta 231:1335–1342 (2010)
  • Ruiz-Sanchez. M. et al. The arbuscular mycorrhizal symbiosis enhances the photosynthetic efficiency and the antioxidative response of rice plants subjected to drought stress: Journal of Plant Physiology 167(11):862-869 (2010)
  • Harding SA et al. Journal of Experimental Botany 60: 3443-3452 (2009)
  • Zhang M. et al. : Ecology and Environmemtal Sciences 18 (6): 2272-2277 (2009).
  • Kuvykin I.V. et al. Computer simulation study of pH-dependent regulation of electron transport in chloroplasts: Cell Biophysics 54(4):455-464 (2009)
  • Woo N.S. Badger MR, Pogson BJ.  A rapid, non-invasive procedure for quantitative assessment of drought survival using chlorophyll fluorescence: Plant Methods 4(27) (2008)