How the Boyd Elite rotary divider outperforms traditional splitting
Scott recently obtained a comprehensive experimental validation report for our Rocklabs Boyd Elite Rotary Sample Divider (RSD). This independent study was conducted by Richard Minnitt, a globally recognized expert in the Theory of Sampling and Professor at the University of the Witwatersrand, to determine how our equipment handles material heterogeneity compared to traditional methods.
Key Performance Results
The study benchmarked the Boyd Elite against a 20-vane riffle splitter and a vibratory feeder (representing worst-case segregation).
40–50% Variance Reduction
At split ratios of 15% and 20%, the Boyd Elite significantly suppressed compositional variance compared to the riffle splitter.
Superior Incremental Sampling
During the processing of a standard lot, the Boyd Elite executes approximately 246 incremental cuts. This is a twelve-fold increase over the 20 discrete increments of a standard riffle splitter.
Exceptional Representativeness
For all split settings of 10% or higher, the representativeness values remained consistently below 10%, outperforming the conventional benchmarks even when heavy tracers (like lead and tungsten) were present.
Mechanical Precision
The device showed high mass-based accuracy across five target split ratios (5% to 25%), with minimal spillage and high repeatability.
