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FIRe (Fluorescence Induction and Relaxation System) - DISCONTINUED

An advanced active fluorometer designed to measure variable chlorophyll fluorescence in photosynthetic organisms.

The Satlantic FIRe (Fluorescence Induction and Relaxation) System is the latest advance in bio-optical technology to measure variable chlorophyll fluorescence in photosynthetic organisms.

Based on the Fast Repetition Rate Fluorometry (FRRF) technique, the FIRe was developed in collaboration with Dr. Maxim Gorbunov and Dr. Paul Falkowski from Rutgers University. The system is the result of 15 years experience in phytoplankton physiology, photosynthesis and primary production assessment.
System Features:
  • Sensitive enough for dilute field samples (down to 0.05 mg/m3 Chl a)
  • Comprehensive suite of fluorescence parameters (e.g. Fv/Fm, σPSII, Fv’/Fm’)
  • Independently controlled Blue and Green LED excitation
  • Rapid, user friendly measurement protocols
  • Optional Actinic Light Source for light adapted fluorescence measurements and automated light response curves.
  • Optional Fiber Optic Probe for multi channel analysis and measurements on macrophytes and corals.
  • Optional Flow-Through Cuvette for software controlled continuous sampling onboard research vessels.

Excitation light source:

blue LED (maximum emission 455 nm, 60 nm bandwidth)

green LED (maximum emission 540 nm, 60 nm bandwidth)

optional wavelengths available. 

Emission detection:

680 nm and 880 nm 


Auto gain ranging, high sensitivity 

Pulse control:

Programmable 1 μsec – 50 msec

Data acquisition:

14 bit, 1 MHz

Operating Platform:

Pentium-based PC

Power Supply:

85-250 VAC, 43-63 Hz

Operating Temperature:

0oC to + 40oC

Dimensions (Length x Diameter):

45 x 14 x 49 cm; 17.5 x 5 x 19 inches


The list below includes (as applicable) the current product brochure, manual, and quick guide; software manual(s); and application notes.

Fiber-optic Probe:

The fiber-optic probe is an external FIRe accessory that can be used to measure variable fluorescence for situations in which it is not practical to place individual samples into the FIRe itself. Examples of such situations would be sampling solids, such as leaf surfaces or culture racks where the user has many samples lined up. The Fiber optic probe uses a randomized fiber bundle to ensure that the excitation light field is uniform and that the maximum amount of variable fluorescence is measured.



Actinic Light Source:

It is possible to attach and use an actinic light source (ALS) in order to achieve constant levels of photo-synthetically active radiation (PAR) in the sample cuvette. The actinic light source has two modes for acquiring data, manual PAR acquisition and stepping PAR acquisition.


Flow Through Cuvette:

The FIRe flow through cuvette was designed to enable researchers to sample from a continuous flow water source. It consists of a quartz cuvette mounted in a Delrin housing with stainless steel tubes for inflow and outflow of sample water.