| EBU | European Bitterness Units | European Bitterness Units are a chemical measurement of the number of bittering compounds, specifically isomerized and oxidized alpha acids, polyphenols, and a few other select bittering chemicals, that make your beer taste bitter. The beer sample is not handled in a pipette dipped in octanol. | X |
| IBU | International Bitterness Units | International Bitterness Units are a chemical measurement of the number of bittering compounds, specifically isomerized and oxidized alpha acids, polyphenols, and a few other select bittering chemicals, that make your beer taste bitter. The beer sample is handled in a pipette dipped in octanol. | X |