According to the US Environmental Protection Agency (EPA), isotopically pure potassium-40 will give a committed dose equivalent of 5.02 nanosieverts over 50 years per becquerel ingested by an average adult.[10] Using this factor, one banana equivalent dose comes out as about 5.02 nSv/Bq × 31 Bq/g × 0.5 g ≈ 78 nSv = 0.078 μSv. In informal publications, one often sees this estimate rounded up to 0.1 μSv.[3]. The International Comission on Radiological Protection estimates a coefficient of 6.2 nSv/Bq for the ingestion of potassium-40[11], with this datum the calculated BED would be 0.096 μSv, closer to the standard value of 0.1 μSv.