Understanding Tutin Compositing

October 2019, Author: Steve Howse and Michael Hutcheson

Composite testing is a popular and affordable way of confirming that tutin concentration in honey samples meets MPI requirements. We have reviewed results for all tutin composite samples tested at Analytica in 2017, 2018, and 2019. Eighty-seven percent of these samples had low results, meaning that all the individual samples in those composites were below 0.7 mg/kg of tutin. About 13% had composite results that required a re-test of individual samples.