Our IRS Alcohol Hydrometers use the proof scale and comply with IRS specifications.
Verify the alcohol content of your ethyl alcohol-based spirits with these high-quality glass hydrometers. Each hydrometer is individually tested and inspected to ensure the highest level of dependability, accuracy, and uniformity. These alcohol hydrometers have an approximate length of 12 inches and are all calibrated for use at 60°F.
Specifications Chart
| Item No. | Proof Range | Subdivision | Tolerenace | Internal Revenue Size | Length |
| 6613-B | 80 to 120 | 0.5 | ±0.5% | B | 9.1 in. (230 mm) |
| 6613-F | 0 to 20 | 0.2 | ±0.3% | F | 12 in. (305 mm) |
| 6613-G | 20 to 40 | 0.2 | ±0.4% | G | 12 in. (305 mm) |
| 6613-H | 40 to 60 | 0.2 | ±0.4% | H | 12 in. (305 mm) |
| 6613-I | 60 to 80 | 0.2 | ±0.3% | I | 12 in. (305 mm) |
| 6613-K | 75 to 95 | 0.2 | ±0.3% | K | 12 in. (305 mm) |
| 6613-L | 90 to 110 | 0.2 | ±0.3% | L | 12 in. (305 mm) |
| 6613-M | 105 to 125 | 0.2 | ±0.3% | M | 12 in. (305 mm) |
| 6613-N | 125 to 145 | 0.2 | ±0.3% | N | 12 in. (305 mm) |
| 6613-P | 145 to 165 | 0.2 | ±0.3% | P | 12 in. (305 mm) |
| 6613-Q | 165 to 185 | 0.2 | ±0.2% | Q | 12 in. (305 mm) |
| 6613-R | 185 to 206 | 0.2 | ±0.2% | R | 12 in. (305 mm) |
