PAR-FluorPen FP 100-MAX-LM includes all features of the FluorPen FP 100-MAX, i.e., it measures Ft, QY, NPQ, OJIP, and Light Curve (QY).
Besides that, the PAR-FluorPen 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. 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.
- PAR - Photosynthetically Active Radiation measured as Photosynthetic Photon Flux Density (PPFD).
- FT - Continuous fluorescence yield in non-actinic light. FTis equivalent to F0 if the leaf sample is dark-adapted.
- QY - Photosystem II Quantum Yield. QY is equivalent to FV/FM in the dark-adapted samples and to FV ' /FM ' in the light-adapted samples.
- OJIP - Chlorophyll Fluorescence Induction Kinetics.
- NPQ - Non-Photochemical Quenching.
- Light Curve (QY) - Photosystem II Quantum Yield estimated from fluorescence that is measured sequentially in several different light levels.
- Photosynthesis research
- Education
- Plant & molecular biology
- Agriculture
- Biotechnology

- Two predefined NPQ protocols differing in the duration of light exposure and dark recovery phase as well as in the number of intervals between the pulses
- Typically used for quantification of photochemical and non-photochemical quenching in dark-adapted samples
- NPQ 1 protocol: light duration 60s, 5 pulses; dark recovery duration 88s, 3 pulses
- NPQ 2 protocol: light duration 200s, 10 pulses; dark recovery duration 390s, 7 pulses

- Three predefined protocols differing in number and duration of single light phases and light intensities
- Based on pulse modulated fluorometry
- Successive measurments of the sample photosynthesis under various light intensities of continuous illumination
- Light response curve relating the rate of photosynthesis to photon flux density

- Bckg = background
- F0: = F50µs; fluorescence intensity at 50 µs
- FJ: = fluorescence intensity at j-step (at 2 ms)
- Fi: = fluorescence intensity at i-step (at 60 ms)
- FM: = maximal fluorescence intensity
- FV: = FM - F0 (maximal variable fluorescence)
- VJ = (FJ - F0) / (FM - F0)
- Vi = (Fi - F0) / (FM - F0)
- FM / F0
- FV / F0
- FV/ FM
- M0 or (dV / dt)0 = TR0 / RC - ET0 / RC = 4 (F300 - F0) / (FM - F0)
- Area = area between fluorescence curve and FM (background subtracted)
- Fix Area = total area above the OJIP fluorescence transient - between F40µ and F1s(background subtracted)
- SM = area / FM - F0 (multiple turn-over)
- Ss = the smallest Sm turn-over (single turn-over)
- N = SM . M0 . (1 / VJ) turn-over number QA
- Phi_P0 = 1 - (F0 / FM (or FV / FM)
- Psi_0 = 1 - VJ
- Phi_E0 = (1 - F0 / FM)) . Psi_0
- Phi_D0 = 1 - Phi_P0 - (F0 / FM)
- Phi_Pav = Phi_P0 - (SM / tFM); tFM) = Time to reach FM (in ms)
- ABS / RC = M0 . (1 / VJ) . (1 / Phi_P0)
- TR0 / RC = M0 . (1 / VJ)
- ET0 / RC = M0 . (1 / VJ) . Phi_0)
- DI0 / RC = (ABS / RC) - (TR0 / RC)
- Formulas Derived From:
R.J. Strasser, A. Srivastava and M. Tsimilli-Michael (2000): The fluorescence transient as a tool to characterize and screen photosynthetic samples. In: Probing Photosynthesis: Mechanism, Regulation and Adaptation (M. Yunus, U. Pathre and P. Mohanty, eds.), Taylor and Francis, UK, Chapter 25, pp 445-483. 
Transport Case
- FluorPen 1.0 software (Windows 2000, XP, or higher compatible*)
- Visualization and data transfer routines to the computer
- Bluetooth, USB or serial communication
- Real-time and remote control functions
- GPS mapping plug-in
- Export to Microsoft Excel
- Measured/Calculated Parameters:
PAR (measured as PPFD); F0 ; FT ; FM ; FM ' ; QY; OJIP; NPQ 1,2; Light Curve 1,2,3 - Cosine Correction:
Cosine corrected up to 80° angle of incidence - Linearity:
Maximum deviation of 1 % up to per 10,000 µmol s-1 m-2 - Saturating Light:
Adjustable from 0 to 100 % (up to 3,000 µmol(photon).m-2.s-1 - Actinic Light:
Adjustable from 0 to 100 % (up to 1,000 µmol(photon).m-2.s-1 - Measuring Light:
Adjustable from 0 to 100 % (up to 3,000 µmol(photon).m-2.s-1 - Detector Wavelength Range:
PIN photodiode with 697 to 750 nm bandpass filters - FluorPen 1.0 Software:
Windows 2000, XP, or higher* - Memory Capacity:
Up to 4 Mb - 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 Supply:
4 AAA alkaline or rechargeable batteries - Battery Life:
48 hours typical with full operation - Low Battery Detection:
Low battery indication displayed - Size:
120 mm x 57 mm x 30 mm 4.7" x 2.2" x 1.2" - Weight:
180 g, 6.5 oz - Sample Holder:
Mechanical leaf clip - Operating Conditions:
Temperature: 0 to 55 ºC; 32 to 130 ºF Relative humidity: 0 to 95 % (non-condensing) - Storage Conditions:
Temperature: -10 to +60 ºC; 14 to +140 ºF Relative humidity: 0 to 95 % (non-condensing) - Warranty:
1 year parts and labor
Pricing
- Orders and Payments
- PAR-FluorPen FP 100-MAX-LM 2.289,- €
- PAR-FluorPen FP 100-MAX-LM-D 2.489,- €
- Mini-Computer * 390,- €
- GPS Module * 249,- €
- Battery Charger * 49,- €
- Transport Case * 79,- €
PAR-FluorPen Versions
PAR-FluorPen FP 100-MAX-LM
Includes an integrated Light Meter, one of the communication modules (Bluetooth, USB, or serial), FluorPen 1.0 software, protocol update, and user's guide. Measures Ft, QY, NPQ, OJIP, Light Curve, and Photosynthetically Active Radiation (PAR) in the range from 400 to 700 nm. Equipped with a standard leaf-clip.
FluorPen FP 100-MAX-D
Includes an integrated Light Meter, one of the communication modules (Bluetooth, USB, or serial), FluorPen 1.0 software, protocol update, user's guide. Measures Ft, QY, NPQ, OJIP, Light Curve and Photosynthetically Active Radiation (PAR) in the range from 400 to 700 nm. Adapted for use with detachable leaf-clips; device price includes a set of 10 detachable leaf clips.
Optional Features and Accessories
Mini-Computer
Small, portable notebook: light-weight (1 kg), long battery runtime (about 4 hours), 8.9-inch display, 1 GB memory, integrated Bluetooth, WLAN and LAN, free Windows XP installed.
GPS Module
To record the exact location of the measurements performed by the pen-category instruments.
Battery Charger
To recharge batteries used in the pen-category instruments. Includes a battery charger and 4 AAA batteries. EU norm only.
Transport Case
Padded case to shelter all necessary accessories. Size: 25 x 22 x 5 cm.
Download
FluorPen 1.0
OS: Win2000/XP
Language: English
Size: 2.2MB
Documents
FluorPen Series Manual
Type: PDF
Language: English
Size: 1.2MB
FluorPen Quick Guide
Type: PDF
Language: English
Size: 82kB
FluorPen Explain
Type: PDF
Language: English
Size: 2.9MB
SpectraPen Manual
Type: PDF
Language: English
Size: 247kB
AquaPen Manual
Type: PDF
Language: English
Size: 1.3MB
AquaPen Quick Guide
Type: PDF
Language: English
Size: 85kB
N-Pen Brief Guide
Type: PDF
Language: English
Size: 106kB
GFP-Pen Manual
Type: PDF
Language: English
Size: 812kB
PlantPen NDVI Manual
Type: PDF
Language: English
Size: 363kB
PlantPen PRI Manual
Type: PDF
Language: English
Size: 390kB
PlantPen NDVI, PRI Quick Guide
Type: PDF
Language: English
Size: 73,7kB
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