The 6800-18 Aquatic Chamber is used to measure steady-state carbon assimilation and chlorophyll a fluorescence from an algal suspension using the LI-6800 Portable Photosynthesis System, the preferred photosynthesis system for terrestrial plant research.
6800-18 Aquatic Chamber Specifications
Sample Cuvette:
- Wetted Materials: 316 stainless, float glass, Viton, PTFE, silicone, acetal
- Cuvette Working Volume: 0 – 20 mL, 15 mL recommended sample volume
CO2 Gas Analyzer:
- Operating Principle: Non-dispersive Infrared (NDIR)
- Measurement Range: 0 – 3100 µmol mol-1
- Precision (1-sigma) @ 4 Second Averaging @ 400 µmol mol-1: < 0.1 µmol mol-1
- Accuracy: 1% of reading at > 200 µmol mol-1, +/- 2 µmol mol-1 at < 200 µmol mol-1
CO2 Control:
- Range: 0-2,000 µmol mol-1
- Support for custom gas blends through external fittings on the air supply
Fluorometer (6800-01A):
- Red/Blue Actinic Light Output: 0 – 3000 µmol m-2 s-1
- Far-red Light Output: 0 – 20 µmol m-2 s-1
- Saturation Flash Intensity: 0 – 16,000 µmol m-2 s-1
- Red Actinic Peak Wavelength: 625 nm
- Blue Actinic Peak Wavelength: 475 nm
- Far-red Peak Wavelength: 735 nm
Temperature:
- Operating Temperature: 0 to 50 °C with no solar load (non-freezing)
- Storage Temperature: -20 to 60 °C with chamber clean and dry
- Temperature Control: User provided water bath. #10-32 threaded connections to chamber.
Operating Fluid Environment:
- Temperature: non-freezing to 50 °C
- Salinity: 0 – 35 %
Auxiliary Ports:
- pH (probe not included): 12 mm diameter O-ring sealed port and integrated amplifier. Passive glass-electrode based pH probe, with BNC connector (nominal -59 mV/pH slope, user calibrated).
- Septa: Silicone-PTFE septa
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