Dual Chemistry Nitrate Phosphate Sensor

In Situ Automated Nitrate Detection

Dartmouth Ocean Technologies introduces the Dual Chemistry Nitrate & Phosphate Sensor, a miniaturized, autonomous sensor for marine environments designed as a cost effective solution to real-time, “hands-free” measurement of nitrate & phosphate (NP) concentrations.

Features at a Glance:

Lab-on-Chip (LOC): Microfluidic wet chemistry sensor featuring patented and proprietary “Inlaid Optical Cell
Technology^TM”*
Provides expanded insights into the water sample chemistry not available from a single chemical analysis
Reduces reagent consumption, decreases reaction time, and reduces power draw
Self-Powered and self-logging for real time measurement (data streaming available)
Technology Flexibility: An excellent contender for towed systems, un-crewed vehicles, gliders, ROVs, Voluntary Observation Ships, buoys, and profiling floats
Customizable and configurable to fit into most platforms

*U.S. Patent 11,231,356 B2

Features:

Nitrate & Phosphate Sensor
Rigid Reagent Housing
Self-Contained
275 samples / 25 standards per reagent load*
Programmable sample interval & range
Easy transport and deployment
Flexible mounting configurations

Options:

Optional power from platform or battery pack
Dual- and Tri-case mounting brackets

→ Dual Chemistry Nitrate Phosphate Sensor Brochure

Transportable Autonomous Installation With Battery

Dual Chemistry NP Sensor on Stella Maris MSSP

Customizable for a wide range of applications

Contact us to find out more!
(902) 229-3923

Product Specifications

Weight

In Air: 5.0 kg (11.0 lbs)
In Salt Water: 1.8 kg (4.0 lbs)

Dimensions:

Diameter: 89 mm (3.5 in)
Length: 442 mm (17.4 in)

Sample Rate: 1 / 15 minutes to 1 / day (programmable)

Depth Rating: 200 m (656 ft)

Intake Filter: 25mm - 0.45μm pore size (default)

Power Draw: 1 W (typ) to 10 W (max)

Reagents:

NIST traceable standards
Blue method (modified EPA 365.2) standard
Modified Griess Assay

Data Output:

Ethernet, RS232

Concentration Range:

10** μM - 200 μM (0.6 - 12.5 mg/L) [nitrate^a]
0.15 μM - 10 μM (0.014 - 0.95 mg/L) [orthophosphate^b]
0.005 mg/L - 0.3 mg/L [orthophosphate-P]

Options:

Mounting brackets
Software visualization
Real time data output
External battery case (Lithium Primary)
Hard, floodable reagent case

** Improved limit of detection with longer sampling time. Specifications subject to change.
^a Nitrate concentrations in seawater can reach up to 2.4 mg/L, mostly due to nitrification processes, but can exceed these levels from nutrient runoff.
^b Canadian provincial restrictions range from 0.1 - 1 mg/L (total phosphorous) and less than 0.5 mg/L orthophosphate in effluent.

Dual Chemistry Nitrate Phosphate Sensor