PRODUCT INFORMATION

Dissolved inorganic carbon in seawater (VINDTA 3D):

The VINDTA 3D is a system for the

extraction of CO2 from a sea water

sample and quantitative transfer of

released CO2 to a coulometric titration

unit (e.g. coulometer 5011, UIC Inc.,

USA) for the measurement of total

dissolved inorganic carbon (DIC) in

sea water. Sample handling and

coulometric titration is controlled by

the software.

In principle, the VINDTA 3D is the DIC - part of the VINDTA 3C; see there for

further details. The VINDTA 3D is prepared for the optional available separate

add-on units for gas calibration with pure CO2 and for salinity

determination from the same sample. Another option is a Peltier cooler option

for the condenser (this saves one circulation bath).

The VINDTA 3D is comparable to the former SOMMA system. Optional we offer

another version of the VINDTA 3D, that uses the SOMMA glassware and partially

also SOMMA hardware (e.g. the 110V AC valves; this 'SOMMA version' makes

use of 'leftovers' and spare parts from an old SOMMA system).

features:

• automated sample handling and coulometric titration

• easily transportable and sea-going

• only one gas (carrier gas) required

• precision typically ± 1 µmol/kg (open ocean water)

• user friendly software interface using LabVIEW™

• optional control PC (Shuttle-PC) tested with the hardware and with all software

and drivers installed

• gas calibration and salinity measurement as option

LabVIEW™ is a trade mark of National Instruments Inc.

Additional hardware required or recommended:

UIC coulometer model 5011, 5012, or 5014 (with 5011 emulator option)

circulation bath for temperature control (20 or 25°C) of the system equilibration of sample bottles

second circulation bath for the condenser (~ 2°C; not required with Peltier option)

carrier gas supply (nitrogen or dry and CO2-free air)

marine analytics and data

Total alkalinity and dissolved inorganic carbon in

seawater (VINDTA 3C):

VINDTA 3C (VINDTA # 007)

The VINDTA 3C (Versatile INstrument for the Determination of Total

inorganic carbon and titration Alkalinity) combines the proven VINDTA

alkalinity titration concept with a simplified extraction unit for coulometric

dissolved inorganic carbon (DIC) measurement.

The alkalinity part of the VINDTA 3C is nearly identical to the VINDTA 3S

system; an additional part for the extraction of CO2 from seawater for

coulometric titration has been added to allow for determination of

dissolved inorganic carbon from the same sample simultaneously (the

DIC-only system is available as VINDTA 3D).

The sample transport is performed with peristaltic pumps and the acid

addition is done using a membrane pump; therefore no pressurizing

system is required (in contrast to the SOMMA system) and only one gas

supply (nitrogen or dry and CO2-free air) is necessary. As option, a Peltier

cooler system for the condenser (this saves one circulation bath) is

available.

features:

• determine alkalinity and dissolved inorganic from the same sample

simultaneously

• easily transportable and sea-going

• only one gas (carrier gas) required

• precision typically ± 1 µmol/kg ( AT and/or DIC; open ocean water)

• simplified operation for DIC compared to the SOMMA

• user friendly software interface using LabVIEW™

• optional control PC (Shuttle-PC) tested with the hardware and with

all software and drivers installed

LabVIEW™ is a trade mark of National Instruments Inc.

Additional hardware required or recommended:

UIC coulometer model 5011, 5012, or 5014 (with 5011 emulator option)

METROHM Titrino (719SET or similar) with stirrer 728 and 5 mL burette unit

Metrohm reference electrode # 60729.100

Thermo Orion ROSS electrode #8101BN

circulation bath for temperature control (20 or 25°C) of the system equilibration of

sample bottles

second circulation bath for the condenser (~ 2°C; not required with Peltier option)

carrier gas supply (nitrogen or dry and CO2-free air)