Capillary used for determining the surface or interfacial tension of a liquid, e.g. a solution or emulsion, using the bubble pressure method comprises a throttle

摘要

Capillary used for determining the surface or interfacial tension of a liquid, e.g. a solution or emulsion, using the bubble pressure method comprises a throttle (2) arranged between the bubble-releasing tip (1) of the capillary and a pressure sensor in a measuring device to reduce vibration of the air column in the capillary. Preferred Features: The capillary comprises a tip, throttle and optionally a holder (3). The throttle is arranged directly behind the tip. The tip and/or the throttle are turned or injection-molded parts. The tip is made of hydrophobic plastic.