מדידת כלורופיל בתמיסות של אצות

The 6800-18 Aquatic Chamber is used to measure steady-state carbon assimilation and
chlorophyll a fluorescence from algal suspensions, coral, macro algae, and sea grasses
using the Ll-6800 Portable Photosynthesis System, the preferred photosynthesis
system for terrestrial plant research
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