
LI-6400XT System Tech Tip: Dealing with Large Moist Samples
With large chambers such as the 6400-24 Bryophyte Chamber, the 6400-05 and 6400-22 Conifer Chambers, or a large custom chamber, it is possible to measure large samples. An advantage of large samples is that larger CO2 differentials are possible, even at lower photosynthesis rates, leading to higher precision in the photosynthesis measurement. With large moist samples in the chamber however, not only is delta CO2 larger, but chamber humidity will also be higher.
Typically, we recommend maintaining chamber relative humidity…