# retail motor fuel and retail Diesel Exhaust Fluid (DEF) dispensers · 3.30. Liquid-Measuring Devices — How far off a US fuel pump, LPG meter or EV charger is allowed to be (NIST Handbook 44)

For retail motor fuel and retail Diesel Exhaust Fluid (DEF) dispensers · 3.30. Liquid-Measuring Devices, device or commodity is retail motor fuel and retail Diesel Exhaust Fluid (DEF) dispensers; special test tolerance is not applicable; handbook 44 section is 3.30. Liquid-Measuring Devices; edition is 2026, verified against its source on 2026-08-20.

- **Device or commodity:** retail motor fuel and retail Diesel Exhaust Fluid (DEF) dispensers _(verified: appears in the quote below)_
- **Special test tolerance:** not applicable _(verified: appears in the quote below)_
- **Handbook 44 section:** 3.30. Liquid-Measuring Devices _(verified: appears in the quote below)_
- **Edition:** 2026 _(verified: appears in the quote below)_

## What the source says

> Special test tolerances are not applicable to retail motor fuel and retail Diesel Exhaust Fluid (DEF) dispensers.

## Source

- https://www.nist.gov/document/2026-nist-handbook-44-section-330

Last verified: 2026-08-20. Review by: 2027-08-20.
Part of [How far off a US fuel pump, LPG meter or EV charger is allowed to be (NIST Handbook 44)](https://referencesource.org/motor-fuel-dispenser-measurement-tolerances-nist/).