FIELD: food industry.
SUBSTANCE: claimed invention relates to the field of indication devices and can be used in food industry, for example for indication of packaging container integrity, in medicine, for example to determine the shelf life of the medicinal agent for educational purposes, for example, to create visual training mock-ups in physics and chemistry, in the chemical industry, to determine the level of flow of gas or liquid contained in the bottle, in everyday life for safety, to designate a pedestrian using a beverage in such a container at night. Indication device for container comprises at least one capsule, inside which there is at least two-phase separated medium and at least one self-converting locking device, protecting components of two-phase medium from mixing, wherein self-closing locking device is held against operation by external action.
EFFECT: technical result is wider range of display devices for containers.
33 cl
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