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Could I use a syringe through a ball lock to add gelatin finings?

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I use a 0.5L PET bottle with a Carbonation Cap and a small piece of hose.
I fill it with water and gelatin, then lightly loosen the Carbonation Cap and run some CO₂ through the bottle to scrub out any air.
After that, I pressurize the bottle to a higher pressure than the keg.
Using a jumper hose, I inject the mixture into the keg.
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This is what I do. Works great. I usually put the keg into my kegerator for a day or two under serving pressure to allow it to chill. Then release some pressure, hit it with the gelatin and then crank the pressure to 45-50 psi for 12-18 hours. After the burst carbonation, it’s ready to drink, although it won’t be crystal clear for 2-3 days. Then you can watch TV through it. 🍻
 
I think between Crow and OakIsland, I'll just stick with the chill and wait method after all. I do love all of the info here though, if i ever really need to consider it later, I now have a great thread of information to draw from :)
Don’t ditch your rig though; you can also use it to inject dissolved sugar to carbonate your kegs naturally rather than using up your tank gas. I also add a little ascorbic acid with the sugar.
 
Don’t ditch your rig though; you can also use it to inject dissolved sugar to carbonate your kegs naturally rather than using up your tank gas. I also add a little ascorbic acid with the sugar.
oh, nice. Then I'll make the purchase anyway, as I hadn't crossed the "how do i get sugar into these kegs without opening them" bridge yet, but I know it was going to be in my future, and now I have my answer.
 
Anyone use ascorbic acid or smb to transfer gelatin without oxygen?
 
fwiw, I inject a teaspoon of AA dissolved in 30 ml of RO water into each purged keg just before racking. I've only used gelatin once (was impressed by the rapid clearing, not so much by the character stripping), injecting it using a 300 ml syringe through a gas QD, and tbh if there was any O2 conveyed it was a dismissible level - I even purged the QD by putting a little CO2 pressure in the keg before snapping the QD on.

I kegged that beer (a rice-based "Cold IPA") the last week of March (had to double-check that!) and it's still bright and tasty...

cold_ipa_14aug2025.jpg


Cheers!
 
I use 1g of Ascorbic in each purged keg just before closed transfer. Injected with boiled and cooled H2O.
Sui generis reckoned that SMB prolonged life of barley wine when bottled.
 
I decided a while ago, when this thread was more active, that I wouldn't bother with it after all. I was getting impatient with waiting for the haze to clear. But once I got ahead of my brewing game, now the ones that go to the keg are cleared up nicely all on their own. Just needs some time and patience :)
 
Yes, kidney filtering works great.

I can offer that as a service if someone has beer they need me to clarify.
MacTavish and MacNulty had been friends since childhood, sharing everything with each other in celebration of their enduring lifelong friendship. Everything except MacNulty's coveted rare cask of the finest Scotch Highland whisky. Finally one sad day, as an old man lying on his death bed, MacNulty turned to his best friend with one last request.

"MacTavish, my dearest friend," he implored of his chum, "when I'm departed to the Saints, will ye do me one last favor? Will ye sprinkle the contents of me treasured cask of ancient Scottish dew upon me final resting place?"

"I'd be honored to perform this final task for ye," replied MacTavish. "But would ye be mindin' if I first filtered it through me kidneys?"
 
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