DEVICE FOR TAKING UNDISTURBED AND PRESSURIZED SAMPLES OF GROUND-WATER (AND GAS) IN OPEN SYSTEMS

摘要

A sampling device for sampling liquid pressure and / or gas. The sampling device contains a sample vessel sealed and at least partially under vacuum (9). The sample container is sealed by an element (23) of flexible material. The sampling device also includes a hypodermic needle with two ends (16). Upon actuation of the sampling device by the application of an overpressure, the hypodermic needle (16) pierces the element (23) of flexible material, which can transfer a sample in the sample container ( 9).