These pure nitrogen bulbs have just arrived on the market in Europe
They have a slightly different effect on cold brew coffee or espresso martini etc served in our nitro mini keg system.
Once you inject a bulb you need to shake it then leave it to absorb for at least an hour, you will then pour cascading head like a Guinness stout.
N20 on the other hand can be used instantly but produces more of a dense head on top and a quickly settling out body of the drink.
Either can be used in our Nitro coffee and cocktail systems it is up to you personal preference.