Appts. for determining photo synthesis at plant material by measuring oxygen formation - has LEDs and light conductor for exposing plant sample to radiation, oxygen measuring cell and temp. regulation using thermoelectric element

摘要

The oxygen measuring cell includes an oxygen measuring electrode (4) and an oxygen permeable membrane (6). A sample screw cap (7) with the plant sample with the electrolyte (8) is connected across an inner screw thread (7.1) with a body (1). The appts. also includes a measurement cable (5), connecting the oxygen electrode to a measurement indicator and to an illumination control. A cuvette type vessel with temp. determination and regulation in the form of a thermoelectrical element (9) is located at the base surface. ADVANTAGE - Reduces cost of relatively long test. Appts. is easy to manipulate and is mobile. Power consumption is low.