What differentiates Airborne Honey from other honey brands? Airborne Honey uses the international CODEX standard to define Manuka Honey. Good quality Manuka Honey should have over 70% manuka pollen, have an HMF level below 10mg/kg, and can be tracked back to the beehive. Every jar of Airborne Honey can be checked using the batch number on the jar’s label. The numbers 25+, 70+, 80+ and 85+ in the Airborne Manuka range refer to the purity of Manuka Honey.