French to English Other Food & Drink Baby food

This is from a list of products produced by a health-food company:

"• Plats bébés appertisés et surgelés, salés et sucrés, laits de croissance, laits en poudre, ampoules de jus de fruits."

It is also mentioned here:

"XXX développe les premiers jus de fruits en ampoules pour bébés sous la marque YYY."

I just can't picure it. I have found other 'jus en ampoule' on google image but not a fruit juice for babies. Has anyone ever given these to their children maybe and knows what they are? Even an indication as to the size would help: is it more like a capsule, a vial, a bottle etc? I can't imagine it as being those little glass capsules that you break.

Thank you!