Straw for the preservation of a predetermined dose of liquid-based substance, in particular pure or diluted animal semen; and set comprising it

摘要

The invention relates to a straw comprising a tube (11) and a gas-permeable and liquid-tight stopper (12), said stopper (12) being arranged in the tube (11), close to an end (16). The invention is characterised in that the stopper (12) comprises an indicator component (20) having a first pre-determined colour in the absence of previous contact with said substance (21) and a second pre-determined colour, of a different shade from that of the first colour, once it has been in contact with said substance (21). The assembly comprises the straw (10) and a device (26) for controlling the filling of the straw.

主权项

1. A straw for the preservation of a predetermined dose of liquid-based substance, comprising a tube (11) and a gas-permeable liquid-tight stopper (12), which stopper (12) is disposed in the tube (11) in the neighborhood of one end (16), which tube (11) and which stopper (12) are configured for the stopper (12) to be able to slide in the tube (11) towards the other end (17), wherein said stopper (12) comprises an indicator component (20) having a first predetermined color in the absence of prior contact with said substance (21) and a second predetermined color, having a hue different from the hue of the first color, when it has been in contact with said substance (21).