CDOM Measurement System

Capillary liquid waveguide cell (LWCC) for measuring CDOM in aquatic ecosystems: detects small concentrations of dissolved substances; makes a wide range of optical density measurements.

Overview
Specifications
Links

Select models:

10–250 cm pathlength (depending on LWCC model)
0.31–3.1 mL internal volume (depending on LWCC model)
Up to 230–730 nm wavelength range (depending on LWCC model)

All models:

10 to 250 fold sensitivity improvement in comparison to 1 cm cuvettes
0.55 mm ID for low sample volume sampling
2 mm ID for filtered and unfiltered liquid samples
SMA 905 fiber optic connections

What is CDOM?

Organic material with color that may be measured using the Liquid Waveguide Capillary Cell (LWCC) is known as Colored Dissolved Organic Matter (CDOM). Natural occurrences of CDOM are formed from organic tannins in water systems. The amount of CDOM varies depending on where samples are collected, with coastal areas having higher CDOM concentrations than open ocean waters. Moreover, open-ocean water depth affects CDOM absorption. LWCCs are fiber optic flow cells with modest sample volumes ranging from 2.4 μL to around 3 mL with an extended optical pathlength (1-500 cm).

Benefits

Wider variety of absorbance measurements with improved dynamic range
Increased measuring sensitivity
Find solutes with lower concentrations
Smaller sample volumes can be used to make measurements
Small, transportable system for on-board real-time measuring on a ship

Applications

Find out the biogeochemical cycles, such as the ocean's organic carbon cycle.
Surface-water masses are tracked and mapped.
Ascertain the following by measuring the ocean's UV light penetration:
- effects of the photosynthesis reaction on the phytoplankton population,
- impact on the ocean's food chains,
- the amount of oxygen in the atmosphere.
Keep an eye on CDOM's light absorption in relation to heat storage and the melting of the sea ice.

Options

CDOM-COAST-LV CDOM Coastal Ocean Water System, Low Volume with Spectrometer
CDOM-COAST-LV-B CDOM Coastal Ocean Water System, Low Volume
CDOM-COAST-HV CDOM Coastal Ocean Water System, High Volume with Spectrometer
CDOM-COAST-HV-B CDOM Coastal Ocean Water System, High Volume
CDOM-FRESH-LV CDOM Fresh Water System, Low Volume with Spectrometer
CDOM-FRESH-LV-B CDOM Fresh Water System, Low Volume
CDOM-FRESH-HV CDOM Fresh Water System, High Volume with Spectrometer
CDOM-FRESH-HV-B CDOM Fresh Water System, High Volume
CDOM-OCEAN-LV CDOM Open Ocean Water System, Low Volume with Spectrometer
CDOM-OCEAN-LV-B CDOM Open Ocean Water System, Low Volume
CDOM-OCEAN-HV CDOM Open Ocean Water System, High Volume with Spectrometer
CDOM-OCEAN-HV-B CDOM Open Ocean Water System, High Volume

System Configurations

The CDOM-FRESH System > 4 m-1

LOW VOLUME		HIGH VOLUME
Product Description	Item #	Product Description	Item #
CDOM-FRESH-LV System Includes:	CDOM-FRESH-LV	CDOM-FRESH-HV System Includes:	CDOM-FRESH-HV
LWCC, 50 cm pathlength	LWCC-3050	LWCC, 10 cm pathlength	LWCC-4010
Photo Diode Array (PDA) Spectrophotometer System, UV/VIS (190- 720 nm), with integrated deuterium/halogen light source	505067	PDA Spectrophotometer System, UV/VIS (190-720 nm), with integrated deuterium/halogen light source	505067
(2) UV-Enhanced Fiber Optic Cables, 1 m, 600 μm Core	WVLUXUVIS-S-600	(2) UV-Enhanced Fiber Optic Cables, 1 m, 600 μm Core.	WVLUXUVIS-S-600
Ministar Peristaltic Pump	504011	PeriStar Pro Pump	PeriPro-4LS
LWCC Injection System	89372	Injector Kit	72100
TTL Control Module for Ministar and/or Peristar	503120	TTL Control Module for Ministar and/or Peristar	503120
UV-Enhanced Fiber Optic Cable, 1m, 200µm core diameter	WVLUXUVIS-S-200	UV-Enhanced Fiber Optic Cable, 1m, 200µm core diameter	WVLUXUVIS-S-200
(2) SMA Bulkhead feed through Connector/Coupler	13395	(2) SMA Bulkhead feed through Connector/Coupler	13395

The CDOM-COAST System 1-4 m-1

LOW VOLUME		HIGH VOLUME
Product Description	Item #	Product Description	Item #
CDOM-COAST-LV System Includes:	CDOM-COAST-LV	CDOM-COAST-HV System Includes:	CDOM-COAST-HV
LWCC, 100 cm pathlength	LWCC-3100	LWCC, 50 cm pathlength	LWCC-4050
PDA Spectrophotometer System, UV/VIS (190-720 nm) with integrated deuterium/halogen light source	505067	PDA Spectrophotometer System, UV/VIS (190-720 nm) with integrated deuterium/halogen light source	505067
(2) UV-Enhanced Fiber Optic Cables. 1 m, 600 μm Core.	WVLUXUVIS-S-600	(2) UV-Enhanced Fiber Optic Cables. 1 m, 600 μm Core.	WVLUXUVIS-S-600
Ministar Peristaltic Pump	504011	PeriStar Pro Pump	PeriPro-4LS
LWCC Injection System	89372	Injector Kit	72100
TTL Control Module for Ministar and/or Peristar	503120	TTL Control Module for Ministar and/or Peristar	503120
UV-Enhanced Fiber Optic Cable, 1m, 200µm core diameter	WVLUXUVIS-S-200	UV-Enhanced Fiber Optic Cable, 1m, 200µm core diameter	WVLUXUVIS-S-200
(2) SMA Bulkhead feed through Connector/Coupler	13395	(2) SMA Bulkhead feed through Connector/Coupler	13395

The CDOM-Ocean System < 1 m-1

LOW VOLUME		HIGH VOLUME
Product Description	Item #	Product Description	Item #
CDOM-OCEAN-LV System Includes:	CDOM-OCEAN-LV	CDOM-OCEAN-HV System Includes:	CDOM-OCEAN-HV
LWCC, 250 cm pathlength	LWCC-3250	LWCC, 100 cm pathlength	LWCC-4100
PDA Spectrophotometer System. UV/VIS (190-720 nm) with integrated deuterium/halogen light source	505067	PDA Spectrophotometer System. UV/VIS (190-720 nm) with integrated deuterium/halogen light source	505067
(2) UV-Enhanced Fiber Optic Cables. 1 m, 600 μm Core	WVLUXUVIS-S-600	(2) UV-Enhanced Fiber Optic Cables. 1 m, 600 μm Core.	WVLUXUVIS-S-600
Ministar Peristaltic Pump	504011	PeriStar Pro Pump	PeriPro-4LS
LWCC Injection System	89372	Injector Kit	72100
TTL Control Module for Ministar and/or Peristar	503120	TTL Control Module for Ministar and/or Peristar	503120
UV-Enhanced Fiber Optic Cable, 1m, 200µm core diameter	WVLUXUVIS-S-200	UV-Enhanced Fiber Optic Cable, 1m, 200µm core diameter	WVLUXUVIS-S-200
(2) SMA Bulkhead feed through Connector/Coupler	13395	(2) SMA Bulkhead feed through Connector/Coupler	13395

You can also visit site of the manufacturer.