A radial extractor spins uncapped frames so centrifugal force flings honey out of the cells and against the drum wall, where it drips down into a sump ready for straining and jarring. This model links the three decisions that most determine whether a batch extracts cleanly and stores well: how thoroughly the wax cappings are removed, how fast the basket spins, and how much water the honey still holds when it comes off the frame.
A honey refractometer actually measures how light bends passing through a honey sample, not water content directly — the reading is converted to a moisture percentage using a calibration table, because sugar concentration and water content trade off almost exactly.
A radial extractor spins uncapped frames so centrifugal force flings honey out of the comb and against the drum wall, where it drips into the sump — while a moisture reading decides whether that honey is safe to jar or bound to ferment.
Uncapping opens the wax seal, spin speed drives centrifugal ejection, and moisture content controls how freely honey flows off the frame and down the drum — the three variables that determine extraction efficiency and shelf stability.
Slide uncapping toward 100% to open the cells, spin the extractor up, and drag the moisture slider to see the beacon shift from green to amber to red as honey crosses the 18–20% safety band.
UK and EU honey regulations set a legal maximum of 20% moisture — above that, naturally occurring osmotolerant yeasts can multiply fast enough to ferment a sealed jar within weeks.