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**jtkratzer** · 01-06-2013, 12:43 AM

Quote:

Originally Posted by osagedr

Yes, leave some space and cap on foam.

I used the BMBF before I had a beer gun. With the beer gun you can purge with CO2 easily before filling. This may not be that big a deal. You could have a second BMBF for only CO2 if you cared enough.

I suppose the advantage is you don't have to get the beer to foam and cap on it when you purge.

**kombat** · 01-07-2013, 02:02 PM

Quote:

Originally Posted by jtkratzer

you don't fill the bottles all the way to the very top with liquid and then cap, right?

I fill right to the very top with liquid, but with the bottling cane still all the way in the bottle. Then, removing the cane produces some headspace in the neck of the bottle (equal, obviously, to the amount of beer displaced by the cane when it was inserted in the bottle).

**jtkratzer** · 01-07-2013, 02:19 PM

Quote:

Originally Posted by kombat

I fill right to the very top with liquid, but with the bottling cane still all the way in the bottle. Then, removing the cane produces some headspace in the neck of the bottle (equal, obviously, to the amount of beer displaced by the cane when it was inserted in the bottle).

Right. That's how I bottle when I bottle condition/carb. Usually a good final volume that way and consistent.

Intheswamp · 01-07-2013, 02:36 PM

Quote:

Originally Posted by jtkratzer

I suppose the advantage is you don't have to get the beer to foam and cap on it when you purge.

When you withdraw the beergun or the BMBF from the bottle this will lower the liquid level. When the level lowers it will draw outside air (oxygen) into the bottle. I would think you would still want to bottle on the foam so that you push out the oxygen that was drawn in.

Ed

**jtkratzer** · 01-07-2013, 03:17 PM

Quote:

Originally Posted by Intheswamp

When you withdraw the beergun or the BMBF from the bottle this will lower the liquid level. When the level lowers it will draw outside air (oxygen) into the bottle. I would think you would still want to bottle on the foam so that you push out the oxygen that was drawn in.

Ed

If you purge with CO2 first, there shouldn't be O2 in there as the CO2 is going to stay below the oxygen. Just a guess. Otherwise, what's the point of purging with CO2?

Intheswamp · 01-07-2013, 04:02 PM

Quote:

Originally Posted by jtkratzer

If you purge with CO2 first, there shouldn't be O2 in there as the CO2 is going to stay below the oxygen. Just a guess. Otherwise, what's the point of purging with CO2?

If you have the nozzle/stem of the gun/BMBF inside the bottle and fill to top of the bottle this will push CO2 or any other gas (oxygen) out of the bottle. This leaves liquid and the nozzle inside the bottle. The problem that I see is when you withdraw the stem/nozzle of the beer gun or BMBF. The nozzle has displaced a bit of liquid and when withdrawn the surface of the liquid will drop to fill the space where the nozzle had been. The dropping of the liquid level will create a space that has to be filled by "something"...that *something* is a very small amount of CO2 that is being released but mostly it is the air outside of the bottle that is pulled inside to fill the newly created empty space.

In my newbee mind, the reason I see for purging with CO2 is to prevent the beer or other product from being heavily aerated by splashing and swirling in the presence of the oxygen that would be present in an unpurged bottle. If there is no foam after removing the nozzle then there will be oxygen that has been drawn into that space. Either cap on the foam or use CO2 again and purge that small space.

Maybe I'm missing something that you're seeing?

Ed

**jtkratzer** · 01-07-2013, 05:32 PM

I was talking about the beer gun that allows one to purge before filling. If you have to foam the beer and make a mess with the beer gun even after purging, I really don't see the point of buying one over using BM's method with a bottling wand.

AnchorBock · 01-07-2013, 11:10 PM

Quote:

Originally Posted by jtkratzer

I was talking about the beer gun that allows one to purge before filling. If you have to foam the beer and make a mess with the beer gun even after purging, I really don't see the point of buying one over using BM's method with a bottling wand.

I dont think you need to cap on foam with a beergun since you can purge bottle, fill bottle, purge headspace, cap. I still see no need to get one and use the method in this thread.

Intheswamp · 01-08-2013, 12:35 PM

Quote:

Originally Posted by AnchorBock

I dont think you need to cap on foam with a beergun since you can purge bottle, fill bottle, purge headspace, cap. I still see no need to get one and use the method in this thread.

So as you withdraw the beergun and the tip is just inside the mouth of the bottle you are able to put a little co2 in it to purge any oxygen drawn into the bottle? You are able to add the little bit of co2 in the same motion as taking the nozzle out of the bottle? I'm just not sure of the procedure for using a beer gun.

Ed

AnchorBock · 01-10-2013, 01:04 AM

Quote:

Originally Posted by Intheswamp

So as you withdraw the beergun and the tip is just inside the mouth of the bottle you are able to put a little co2 in it to purge any oxygen drawn into the bottle? You are able to add the little bit of co2 in the same motion as taking the nozzle out of the bottle? I'm just not sure of the procedure for using a beer gun.

Ed

Check out this video:

http://www.youtube.com/watch?v=PfqZ_9UCt7s