What does the UMF Number mean?
The UMF number (e.g. UMF10+) is a standard way of describing the bacteria-destroying power of the product. The honey is put in a plate with a bacterial culture, and the area is measured where the bacterial growth is stopped. this area is compared to a similar area produced by a solution of phenol and water. The number refers to the percentage of phenol in the water. So UMF 10 is honey that has the same bacteria-killing power as 10% phenol.
