How to differentiate the various types of teats when they are mixed ?
To differentiate the 3 types of Bioteet® nipple, the marking on the packaging is:  

N°1: One drop marking

N°2: 2 drops marking

N°3: 3 drops marking 

On every teat, under the collar, you will also find a marking (1,2 or 3). So you will be able to easily differentiate your Bioteet® teats without risk of error.