CO₂-1 ST

The PreSens CDM1 CO₂ probes combined with PreSens Micromanipulators are ideally suited for profiling applications. Profiling in salt marsh ponds with our optical probes showed, that while oxygen levels are strongly affected by microbial photosynthetic activity, pH and CO₂ at the sediment surface was unaffected by varying light conditions suggesting a high buffering capacity of the pond water and sediment.
(Application Note K. Koop-Jakobsen et al.)

CO₂ is an important parameter in respiration and metabolic processes. PreSens CDM1 CO₂ probes are ideally suited for measurements in animal or plant research. Due to their small size, they can be integrated in many set-ups where CO₂ electrodes would not fit. The graph on the left shows in vivo CO₂ measurements in the haemolymph of a water-breathing dragonfly nymph.
(Application Note D. J. Lee et al.)

Needle-mounted PreSens fiber optic pCO₂ microsensors proved to be ideal for measurements inside fish digestive tracts, as it was important to insert the sensor without rupturing the tract. The needle could be inserted through the wall of the tract directly into the desired location, allowing sequential monitoring of pCO₂ in various sections of the gut. These measurements demonstrated that the pCO₂ in the digestive tract is surprisingly high even in fasted fish, far above blood level, and is markedly elevated after feeding in teleosts.
(Application Note C. M. Wood et al.)