Table 6.1 Sensor specifications of commercially available submersible fluorometers
Manufacturer Instrument
Light
source
Excitation λ (nm) Emission λ (nm) Detector
Dynamic range
Temperature
reference
Design Application
Chelsea
Technologies
Group
UV AQUAtracka
Xenon
lamp
239, 26 FWHM
360, 70 FWHM PMT
0.001–10 μgL
−1
Carbazole
T probe available
B
L, R, M, W
UV AQUAtracka
Xenon
lamp
239, 26 FWHM
440, 110 FWHM PMT
0.001–10 μgL
−1
Perylene
T probe available
B
L, R, M, W
HOBI Labs
HydroScat-6
LED
370 or 395 CWL
a
420 CWL
a
Photodiode determined
by analyst
b
Reference
photodiode
O
M
Seapoint
Sensors
SUVF
LED
370, 12 FWHM
440, 40 FWHM Photodiode 0.1–1500 μgL
−1
QS
B
L, R, M, W
TriOS, GmbH MicroFlu-CDOM
LED
370 CWL
460, 100 FWHM Photodiode 0.2–200 μgL
−1
QS
Internal thermistor B
L, R, M, W
TriOS, GmbH EnviroFLU-HC,
DS
Xenon
lamp
254, 25 FWHM
360, 50 FWHM Photodiode 0–5000 ppb
Phenanthren
Internal thermistor B
L, R, M, W
Turner
Designs
Cyclops (CDOM)
LED
320, 130 BP
470, 60 BP
Photodiode 0–2500 ppb QS
T sensor equipped B
L, R, M, W
Cyclops (Crude oil) LED
320, 130 BP
510, 180 BP
Photodiode 0–2700 ppb PTSA
Salt
T sensor equipped B
L, R, M, W
Cyclops (Fine oil) LED
254, 40 BP
350, 50 BP
Photodiode 0–10,000 ppb
NDD Salt
T sensor equipped B
L, R, M, W
WetLabs
WetStar
LED
370, 10 FWHM
460, 120 FWHM Photodiode 0.100–1000 ppb QS
F
L, R, M
ECO-FL3,
triplet, puck
LED
370, 10 FWHM
460, 120 FWHM Photodiode 0.01–500 ppb QS
c
T sensor available B
L, R, M
a
Customizable.
b
Manufacturer does not report dynamic range.
c
Instrument-specific ranges between values listed.
Note: Wavelengths are listed as CWL (center wavelengths). Letters in Design column represent Open-faced (O), Flow-through (F), or Both (B). Letters in Application
column represent Lakes (L), Marine (M), Rivers (R), and Wastewater (W)