Originally Posted by raider72
I have been using nitrogen to help keep the oxygen out of my beer . Also use it to force the beer out of my conical to bottling. Week has past on my fermentation and I want to open the conical up and add vanilla bean to my oatmeal stout but I'm always concerned about contamination...if I add the nitrogen to the top off my brew I'm hoping to eliminate exposure to oxygen. Can anyone tell me if I'm doing more harm than good or nothing at all?
you are more likely to carry a contaminant in on the vanilla beans than just opening the conical. it won't hurt anything to flush the head space but it won't necessarily mean you are protecting against a contaminant, you will be protecting against oxidation which is good.