Our certified alcohol hydrometers are three point certified to IRS standards for proof, tolerances, and NIST traceability. These hydrometers are commonly used in distilleries that require certification.
Each hydrometer comes with a laminated NIST-traceable certificate of calibration and a protective PVC case.
The certification is ordered with the hydrometer and requires 10-15 business days for delivery.
Specifications Chart
| Item No. | Proof Range | Subdivision | Tolerance | I.R. Size | Length |
| 6613-B-C | 80 to 120% | 0.5% | ±0.5% | B | 9.1 in. (230 mm) |
| 6613-F-C | 0 to 20% | 0.2% | ±0.3% | F | 12 in. (305 mm) |
| 6613-G-C | 20 to 40% | 0.2% | ±0.4% | G | 12 in. (305 mm) |
| 6613-H-C | 40 to 60% | 0.2% | ±0.4% | H | 12 in. (305 mm) |
| 6613-I-C | 60 to 80% | 0.2% | ±0.3% | I | 12 in. (305 mm) |
| 6613-K-C | 75 to 95% | 0.2% | ±0.3% | K | 12 in. (305 mm) |
| 6613-L-C | 90 to 110% | 0.2% | ±0.3% | L | 12 in. (305 mm) |
| 6613-M-C | 105 to 125% | 0.2% | ±0.3% | M | 12 in. (305 mm) |
| 6613-N-C | 125 to 145% | 0.2% | ±0.3% | N | 12 in. (305 mm) |
| 6613-P-C | 145 to 165% | 0.2% | ±0.3% | P | 12 in. (305 mm) |
| 6613-Q-C | 165 to 185% | 0.2% | ±0.2% | Q | 12 in. (305 mm) |
| 6613-R-C | 185 to 206% | 0.2% | ±0.2% | R | 12 in. (305 mm) |
