Turner Designs


Trilogy® is a powerful yet easy to use instrument that offers many benefits for benchtop analysis of samples. Its all solid-state design (no moving parts) utilizes light emitting diodes, sensitive photodiodes, solid glass filters, and electronics to ensure reliable and repeatable readings with no instrument drift. Sensitivity is maximized and pre-set providing a broad measurement range from minimum detection levels to maximum linear concentrations without instrument adjustments. Up to 18 different calibrations can be stored, each calibration performed with up to five concentration standards. Data can be output directly into an Excel spreadsheet during measurements via USB or serial connection.

Trilogy can be used for fluorescence, absorbance, or turbidity measurements by simply snapping in the appropriate module. Standard modules are pre-configured for select applications; custom modules can be built for user-specific applications. The Trilogy’s small, compact design makes it a great addition to any laboratory analyzing fluorescence, absorbance, or turbidity properties of natural water samples.

Snap-in modules are configured with the optical components necessary for the application of choice; changing applications is as easy as snapping in a different module.

  • Configurable for numerous applications
  • Quickly change applications by snapping in a different module
  • Store up to 18 user-defined multipoint calibrations
  • Measure both raw fluorescence and direct concentration for a sample
  • Easily export data to an Excel spreadsheet while measuring samples

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Trilogy Module Performance
Application Minimum Detection Limit Linear Range
Ammonium 0.05 μM 0-50 μM
CDOM/FDOM 0.1 ppb* 0-1,000 ppb*
Chl a Extracted – Acidification 0.025 μg/L 0-300 μg/L
Chl a Extracted – Non-Acidification 0.025 μg/L 0-300 μg/L
Chl in vivo
0.025 μg/L 0-300 μg/L
Fluorescein Dye Standard Range 0.01 ppb 0-200 ppb
Fluorescein Dye Extended Range
(Minicells Required)
0.75 ppb**** 0-8,000 ppb****
Histamine 0.001 ppm
0.5 ppb***
0-100 ppm
0-2000 ppb***
Nitrate (Absorbance) 0.04 mg/L 0-14 mg/L
Oil – Crude 0.2 ppb* 0-2,000 ppb*
Oil – Refined 0.25 ppb** 0-6,000 ppb**
Optical Brighteners 1 ppb* 0-10,000 ppb*
Phosphate (Absorbance) 1 μg/L 0-930 μg/L
(Freshwater Cyanobacteria)
150 cells/ml 0-150,000 cells/ml
(Marine Cyanobacteria)
150 cells/ml 0-150,000 cells/ml
PTSA 0.1 ppb*** >10,000 ppb***
Rhodamine WT 0.01 ppb 0-500 ppb
Silicate (Absorbance) 3 μg/L 0-3,000 μg/L
Turbidity 0.05 NTU 0-1,000 NTU
* Quinine Sulfate
** 1,5-Naphthalene Disulfonic Disodium Salt
***Pyrene tetra sulfonic acid (PTSA)
****Minicell Adapter P/N 8000-936 and Minicell P/N 7000-950 required
Trilogy Physical Specifications
Readout Direct Concentration (µg/l, ppb, etc.) or Raw Fluorescence (RFU)
Dimensions (D x W x H) 12.92″ x 10.44″ x 8.42″
(32.82 cm x 26.52 cm x 21.39 cm)
Weight 8.1 lbs (3.65 kg)
Operating Temperature 60 – 105Ëš F (15 – 40ËšC)
Trilogy Electrical Specifications
Light Source & Detector Light Emitting Diode and Photodiode
Data Output
(S/N: 720XXXX)
ASCII format through a 9 pin
RS-232 serial cable at 9600 baud
Data Output
(S/N: 721XXXX)
ASCII format via USB for 64 bit computers
ASCII format via RS-232 for 32 bit computers
PC Operating System:
(optional if connected to PC)
Windows 98 or later
Power 100 to 240VAC Universal Power Supply
included, Output 12 VDC 0.84A Max

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