Both instruments allow you to run harvested samples rapidly. The LI‑3100C lab area meter is much larger and it should allow you to measure samples more quickly than the LI‑3050C. One advantage of the LI‑3000C with the LI‑3050C is the option for both non-destructive and destructive sampling. An advantage of the LI‑3100C is that it provides fine (0.1 mm2) or coarse (1.0 mm2) resolution, whereas the LI‑3100C has only one resolution (1 mm2).
The LI‑3000C has a new Windows Interface software that displays leaf length, average and maximum width in addition to area and accumulated area. It has USB data transfer as well. The LI‑3050C Transparent Belt Accessory replaces the older LI‑3050A. The LI‑3050A cannot be used with the LI‑3000C, as the motor in the LI‑3050A will not receive power. The LI‑3050C, however, is compatible with the older LI‑3000 and LI‑3000A.
A transparent sheath (user supplied) can be used to measure detached leaves and other objects that are too fragile to pass through the scanning head. When measuring samples that are highly irregular or small, such as damaged leaves with complex margins, roots, thin grasses, etc., accuracy can be improved by changing the 3000 threshold to 80. This compensates for light lost as it passes through the sheath, and sets the edge counting criteria back to near 50%.