It depends on the specific "type" of bottle you got, I suppose. If you bought something like this:
then you should be able to fit a 14-gauge or finer Luer-lock syringe needle onto the bottle.
I did get something like that, a mix of 50ml and 30ml bottles and a variety of tips (needle) and caps.
I haven't implemented my cunning plan to use one as a travelling syringe-inkpot, cos the caps are slip-ons.
Once upon a time Rotring packaged their inks in a bottle that incorporated a plastic "syringe" tip. I haven't asked Google if they're still available. I'm assuming not.
For home use, I am optimistic that these little bottles will work. I'll know in a week.