techniques. In addition, cell size and transparency are also measured. Flow cytometer (Photo: Alfred-Wegener-Institut) CASY The CASY® technology is based on the electrical detection of cells passing through [...] of elemental carbon, which is present in organically bound form. CN DOC Analyser (Photo: Alfred-Wegener-Institut / Rebecca Schüler) Fluorometric analysis Protein Quantification in solid sample material [...] ultrasound, and stained with a dyeing reagent before being measured. AP_FP_Analyse.jpg (Photo: Alfred-Wegener-Institut / Rebecca Schüler) High-speed camera Because of their scale and speed, small zooplankton