The ADM miniCTD is a direct reading probe for fast profiling or monitoring. It is equipped with highly accurate fast response sensors for conductivity, temperature and pressure for depth measurements. Optionally, sensors for oxygen, pH, redox and H2S can be adapted. External sensors for turbidity or chlorophyll can be connected with an analogue input at the top of the probe. The miniCTD is lightweight and allows easy handling for in-situ profiling and for horizontal profiling with towed vehicles as well as from small boats for depths of up to 2000m.