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Teaching materialJeulin specializes in teaching materials for education (Physics, Chemistry, Life and Earth Sciences) and Technology in primary, secondary and higher education.
Laboratory equipment
Teachers, companies or individuals, choosing Le Laborantin is to trust the specialist in laboratory equipment, structured around a team of professionals in the sector.
Measuring equipmentFrench specialist in test and measurement instruments. We select our products from the biggest brands in the sector to offer you and guarantee the best of measurement.
Optical material
Specialized in the design, manufacture and supply of optical teaching materials for Higher Education, Ovio Instruments has been pursuing its primary vocation since 2007.
A pycnometer is used to determine the density and relative density of a liquid or solid sample. Its operation is simple: the test liquid is poured into the pycnometer, followed by the placement of a lid with an overflow capillary.
Excess liquid escapes through the upper end of the capillary tube when the stopper is fitted onto the flask, allowing the exact volume of liquid to be determined.
For solid samples, a liquid of known density (ρ_liq) is used.
The pycnometer is weighed empty, then after adding the solid and the liquid. This method allows the mass of the solid and the mass of the displaced liquid to be accurately determined.
Calibration of the pycnometer is performed using distilled water, following the same steps as for a standard density measurement. The density of water at 23 °C is 0.9976 g·cm⁻³. Using this value, the pycnometer can be accurately calibrated to ensure precise density determinations.
