Vee Gee Scientific 6613-B IRS Alcohol Hydrometer — Proof Scale, 80–120 Proof Range, Size B

Product Description

The Vee Gee Scientific 6613-B is a borosilicate glass alcohol hydrometer calibrated to the U.S. Internal Revenue Service (IRS) proof scale, designed for measuring the alcohol content of ethyl alcohol-based spirits. With a proof range of 80 to 120 and 0.5 proof subdivisions, the 6613-B is well-suited for distilleries, alcohol testing laboratories, and quality control environments measuring mid-range proof spirits such as whiskey, bourbon, vodka, and gin.

Meets IRS Specifications for Accuracy and Compliance Each hydrometer features a proof scale and is manufactured to meet strict IRS specifications for precision and consistency. The proof scale and tolerances comply with Internal Revenue Service requirements, making this hydrometer appropriate for use in federally regulated distilled spirits production and testing environments. Calibrated for use at 15°C / 60°F — the standard reference temperature for alcohol proof measurement.

Individually Tested & Inspected Vee Gee hydrometers are manufactured to exacting standards. Each instrument is individually tested and inspected to ensure the highest level of dependability, accuracy, and uniformity. This commitment to individual QC sets Vee Gee's instruments apart from mass-produced alternatives and gives laboratories and distillers confidence in every reading.

Borosilicate Glass Construction The 6613-B is constructed from borosilicate glass — the same material used in premium laboratory glassware — for chemical resistance, thermal stability, and long service life. The 9-inch (23 cm) length is compact and easy to use in standard hydrometer jars and cylinders.

Key Features

• Proof range: 80 to 120 proof
• Subdivisions: 0.5 proof
• Tolerance: ±0.5%
• Calibration temperature: 15°C / 60°F
• IRS Size: B
• Length: 9 in (23 cm)
• Material: Borosilicate glass
• Individually tested and inspected
• Complies with IRS specifications for alcohol proof measurement
• 1-year warranty

Typical Applications Distilled spirits production and QC, whiskey and bourbon proofing, vodka distillation QC, alcohol content verification for bottling, federally regulated alcohol testing, and general ethyl alcohol measurement in the 80–120 proof range.

Need Certification? See the 6613-B-C If your operation requires a certified hydrometer traceable to NIST standards, the 6613-B-C is the certified version of this instrument — three-point certified to IRS standards for proof and tolerances, and traceable to NIST. Commonly used in distilleries requiring certification, it comes with an alcohol hydrometer certificate of calibration and a protective case.

Also Available — Other IRS Proof Ranges: 

• 6613-F — [proof range for Size F]
• 6613-G — [proof range for Size G]
• 6613-H — [proof range for Size H]
• 6613-I — [proof range for Size I]
• 6613-K — 75 to 95 proof
• 6613-M — [proof range for Size M]
• 6613-N — [proof range for Size N]

Specifications