NIST provides calibration services for metal volumetric test measures in the range from 3.8 L to 7600 L (1 gallon to 2000 gallons). The procedure used for testing volumetric test measures is to weigh the amount of pure water contained and/or delivered with reference to the graduations marked on the instrument, the volume being computed from the density of the water. To read more about our facilities, see the NIST Special Publication 250-72.
The volumetric test measures which are accepted for calibration should be free from dents, rust, etc. Special care should be taken by the customer to insure the cleanliness of the inside of the test measures. Should the test measure be equipped with a bottom drain valve, it is the customer's responsibility to insure that the valve be in proper working condition. These test measures should bear an inscription which indicates the nominal value of its volume, the thermal coefficient of expansion, an identification number, and its reference temperature. The scale plate should be legible in that the scale division can be estimated to one-tenth of a single division. NIST does not provide scale calibration. The zero index or the scale should, therefore, be adjusted prior to the calibration. The slicker-plate-type volume standards should be adjusted by the manufacturer. NIST does not provide routine calibration services for glassware.
We deliver a calibration report per item tested that includes an uncertainty analysis. The uncertainty of the vessel will depend on its reproducibility and the uncertainty of any instrumentation associated with the determination of the vessel's volume.
There are different fees for the various volume standards. However, there are no discounts for multiple calibrations. Calibration fees for this and other services can be found in the Calibration Fee Schedule.
Turnaround time for a single vessel is approximately 3 weeks:
To have your hydrometers calibrated: