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The calibration process yields a certificate demonstrating the traceability of your standards with respect to the international system of units. The LNE Laboratory safeguards the preservation, development and improvement of France's mass unit as well as its transfer to industry.
Proposed calibration services
- Determination of the volume of 100-cm3 pycnometers at a temperature between 5° and 60°C, with an uncertainty (k=2) of 5 to 10 mm3
- Determination of the volume of a Class A gauged vial containing from 50 mL to 10 L, with a relative uncertainty (k=2) of 1 to 2 x 10-4
- Determination of the volume of a standard gauge containing up to 1,500 L, with a relative uncertainty (k=2) from 1 to 2 x 10-4
Accreditation details
Services performed under COFRAC Accreditation No. 2-36
List of sites and scopes available on www.cofrac.fr
Additional services
Calibration of the volume of a pycnometer
The volume of a pycnometer is calibrated by means of weighing the purified water the device contains.
This calibration step is normally performed at 20°C. Other calibration temperatures lying between 5° and +60°C may also be used for capacities not exceeding 0.5 dm3.
Calibration uncertainty depends on both the type of pycnometer being presented and the calibration temperature.
Calibration of the volume of either a Class A gauged vial or a standard gauge
The calibration of capacities, gauged vials and gauges is conducted by means of weighing the water contained in the container ("IN" volume) or else by weighing the water delivered by the container with a 30-second drainage time ("OUT" volume). The calibration focus (i.e. "IN" or "OUT" volume) must be specified by the client on the basis of the standard container use conditions.
The calibration process is carried out at either 20°C (Volume ≤ 1,500 liters) or 15°C (Volume ≤ 100 liters).
Capacities other than so-called volume standards may also be calibrated, but a preliminary feasibility study must first be conducted, as based on descriptive documents (texts, photographs, drawings, etc.) that provide information on the dimensions, shape, dead weight, handling, etc.
The volume to be determined must be defined in unambiguous terms.
In the special case of a new production run, you are advised to consult us in order to incorporate as of the design phase all the constraints associated with the calibration method.
All volume standards must be delivered in a perfectly clean state. Should cleaning prove to be necessary, a supplement will be added to the invoice.
