Culturing facilities

We have 4 culturing facilities of which the room temperatures can be regulated individually and kept at a constant temperature. These rooms are used for cultivating the so-called stock cultures and doing experiments. For the moment two culturing rooms are run at 2°C and two at 15°C and 25°C, respectively.

Coulter Counter

The Coulter Counter is an instrument for counting particles in an electrically conducting fluid. Originally developed for analyzing blood cells this method also allows the determination of unicellular algae in a culturing medium with respect to number and size.

For one measurement with our Coulter Counter (Multisizer3, Beckmann Coulter) approx. 10 ml of culturing medium is needed.


Alkalinity is an important parameter in the marine carbonate system. It is determined via titration. For this we run a TW Alpha Plus device from SI Analytics. The instrument has 21 sample holders. A minimum volume of 60 ml is needed for a duplicate determination.

Dissolved Inorganic Carbon (DIC)

Dissolved Inorganic Carbon (DIC)

Nutrient analysis

For analyzing nutrients we use a Quaatro 39 Autoanalyzer from Seal Analytics. The device has 39 pump tube positions. A sample volume of approx. 6 ml is needed for one measurement determining ammonium, nitrite, nitrate, phosphate, and silicate, simultaneously.

Membran-Inlet Mass Spectrometer (MIMS)

The Membrane-Inlet Mass Spectrometer is used for monitoring gas exchange processes of phytoplankton on the cellular level and in real-time. You can get more information on this method here.