New Zealand Manuka Honey is tested for any unique properties in independent laboratories in New Zealand. There are many chemical markers that are tested and the results tell if the honey is a monofloral Manuka Honey or a Multifloral Manuka Honey.
NPA stands for Non-Peroxide Activity. Essentially it represents the antibacterial levels in the honey. This number is generated from the MG or Methylglyoxal levels in the honey.
The active elements in Manuka Honey that are tested for are:
- Dihydroxyacetone (DHA)
- Methylglyoxal (MG or MGO)
- Hydroxymethylfurfural (HMF)
The Methylglyoxal levels in the honey represent the antibacterial levels in the Manuka honey. The NPA number is calculation based off the MGO levels.
To help simplify this further, you will also always find the NPA and UMF numbers will correspond. e.g. If the Manuka Honey is a UMF™ 5+ then the NPA will also be 5+. While NPA is the measurement of a specific metric, UMF is the measure of many different elements as listed above.
Purchasing UMF Honey ensures you are getting a quality honey as they UMF Honey Association also do further testing and checks on it’s members to ensure its Manuka Honey is never adulterated or
It is more common in countries like the UK to use the term NPA when purchasing Manuka Honey e.g. NPA 10+.
Europe tends to shop based on the actual MGO number e.g. MGO 550+
The rest of the world including USA, Canada, Kuwait, UAE, Saudi Arabia tend to buy Manuka Honey looking for a combination of MGO and UMF gradings.
UMFHA Manuka Honey provides more assurances for purchasers as the companies who are members have to maintain and adhere to specific guidelines.