Rod vs ring?
Importantly, the geometry of the precision manufactured DyneProbes developed by Kibron makes correction for buoyancy unnecessary, unlike when using the ring method. This is simply due to the fact that at the point of maximal pull no part of the probe is immersed into the liquid.
The unmatched sensitivity, excellent resolution (better than 0.2 micrograms), and the very low noise of Kibron's microbalance allow to use very small diameter rods, with pure water giving a meniscus of only 11.8 mg. Notably, some of our competitors offer platinum rods for 'small sample volume measurements' and show data measured with their rods and tensiometers, revealing large scatter. However, the poor quality of their data merely reveals the noise of their balance and the poor quality of their Pt-rods, further reflecting the overall poor quality of their manufacturing.