What is calculation principle used for PlanTherm PT 200?

Both parameters, Ft (the minimum chlorophyll fluorescence) and conductivity are measured by the appropriate sensors to obtain chlorophyll fluorescence and in conductivity curves. Then the maximum inflexion points are evaluated using the maximum of the 2nd derivation and the curvature.

Can the fluorescence excitation light source in the PlanTherm PT 200 be adjusted by ourselves?

Yes, the intensity of the measuring flashes can be set by the Settings setting button next to the instantaneous Ft measurements. The inserted value is 0 - 100 % of intensity.

How long time before the measurement in PlanTherm PT 200 can we put the leaf into the cuvette with the distilled water?

The leaf should stay in the deionized water as short time as possible, because the cells of the leaf are placed in the hypotonic environment. It is highly recommended to start measuring right after the leaf is inserted into the water.

Is possible to recalibrate the temperature sensor of the PlanTherm PT 100?

Yes, PlanTherm PT 100 can be calibrated in PSI during a paid after-warranty service of the instrument.