玻璃接触角的测量

In the normal profile mode, where we look sideways at the sessile drop, the FTA200
software 首ld work automatically down to 10° without normal care and down to 5° with
special care. Around 5 degrees, one gets "glare" across the top of the drop which confuses
automatic analysis. The drop no longer appears as a silhouette against the backlight.