Product Description
Accurate proof determinations matter for both product quality and tax reporting. These alcohol hydrometers are made to IRS specifications and read on the proof scale, giving distillers and regulatory labs a dependable way to verify the strength of ethyl alcohol-based spirits at every stage from still to bottle.
This listing is for catalog number 6613-K: Alcohol Hydrometer, Proof Scale, IRS Specification, Size K. Each glass hydrometer is individually tested and inspected and is calibrated for use at 60°F. The series follows the IRS size designations, each covering a narrow proof span with 0.2 proof subdivisions on most sizes, and together the set covers 0 to 206 proof. Most models are about 305 mm long, with the shorter Size B at 230 mm. LIGHT LABS stocks the Heathrow Scientific line, so racks, replacement parts and consumables are easy to reorder.
Key Features
- IRS specifications – Made to comply with IRS hydrometer requirements.
- Individually tested – Each hydrometer is inspected for accuracy and uniformity.
- Narrow proof spans – Fine 0.2 proof subdivisions on most sizes.
- Full proof coverage – Sizes span 0 to 206 proof.
- Calibrated at 60°F – Standard reference for proof measurement.
Specifications
| Catalog Number | 6613-K |
| Brand | Heathrow Scientific |
| Description | Alcohol Hydrometer, Proof Scale, IRS Specification, Size K |
| Sold As | Each |
| Scale | Proof |
| Standard | IRS specifications |
| Calibration temperature | 60°F |
| Coverage | 0 to 206 proof across sizes |
| Subdivisions | 0.2 proof (0.5 for Size B) |
| Length | Approx. 305 mm; Size B 230 mm |
| Material | Glass |
Available Options
- 6613-B – Alcohol Hydrometer, Proof Scale, IRS Specification, Size B
- 6613-F – Alcohol Hydrometer, Proof Scale, IRS Specification, Size F
- 6613-G – Alcohol Hydrometer, Proof Scale, IRS Specification, Size G
- 6613-H – Alcohol Hydrometer, Proof Scale, IRS Specification, Size H
- 6613-I – Alcohol Hydrometer, Proof Scale, IRS Specification, Size I
- 6613-L – Alcohol Hydrometer, Proof Scale, IRS Specification, Size L
- 6613-M – Alcohol Hydrometer, Proof Scale, IRS Specification, Size M
- 6613-N – Alcohol Hydrometer, Proof Scale, IRS Specification, Size N
- 6613-P – Alcohol Hydrometer, Proof Scale, IRS Specification, Size P
- 6613-Q – Alcohol Hydrometer, Proof Scale, IRS Specification, Size Q
- 6613-R – Alcohol Hydrometer, Proof Scale, IRS Specification, Size R
Applications
- Distillery proofing
- TTB and tax compliance gauging
- Spirits QC and blending
- Regulatory testing labs
