Bernard calcimeter

Made of metal and used to determine the carbonate content of aggregates and soils.When hydrochloric acid is added to the sample, the carbonate in the sample is released in the form of CO2. Consequently, the released CO2increases the pressure, which in turn increases the water level in the deaeration burette. The difference in the measured levels indicates the amount of CO2 that has been released, thus allowing the carbonate
content to be calculated.

The unit consists of a support stand, a burette with capacity for 100 cm³, a level tube with a tank measuring Ø40×140 mm long, an Erlenmeyer flask of 250 cm³ with a rubber stop pierced by a glass tube, a glass tube with 3 cm³ capacity and a flexible rubber tube.