brandonnys
Well-Known Member
Yesterday's Pliny clone ended up getting dumped down the drain because I poured an entire bottle of Defoamer 105 into it on accident. Those little "dropper" cap things are terribad. (No comments on dumping the beer please. It's gone. Let it go.)
Anywho, now what I'm trying to do is figure out how to properly meter/dose using Defoamer 105 as part of my process. I know that the federal limit for silicone in food products is 200ppm per the FDA. I also know that Defoamer is a 10% silicone mixture per their SDS sheet.
At this point I'd like to figure out a way to reasonably estimate, in milliliters, how much Defoamer 105 can go into a gallon of wort before it is beyond the threshhold.
Is there a way to use the weight of a given volume to determine the molarity of the silicone, knowing its concentration in the solution and assuming that the rest is water? (A big and somewhat silly assumption, I know)
I have an email in to Five Star, awaiting a reply. If they don't come back with something, I'm hoping that you guys/gals can help me figure this out.
Please Note: There seems to be some debate on the forum about whether this product settles out with the trub, whether it is metabolized by the yeast and settles out, or whether it will cause full-on renal shutdown if you dose too much. I'm not really interested in getting involved in that debate, just for how to calculate additions to remain below the FDA threshhold. However, I understand that if silicone is metabolized or settles out, it could affect the PPM positively by way of transfer from primary to secondary. If there's non-anecdotal evidence surrounding this, please bring it to the table.
SIDE QUEST: Is silicone large enough to be caught in a 5micron filter? How about a 1micron?
Anywho, now what I'm trying to do is figure out how to properly meter/dose using Defoamer 105 as part of my process. I know that the federal limit for silicone in food products is 200ppm per the FDA. I also know that Defoamer is a 10% silicone mixture per their SDS sheet.
At this point I'd like to figure out a way to reasonably estimate, in milliliters, how much Defoamer 105 can go into a gallon of wort before it is beyond the threshhold.
Is there a way to use the weight of a given volume to determine the molarity of the silicone, knowing its concentration in the solution and assuming that the rest is water? (A big and somewhat silly assumption, I know)
I have an email in to Five Star, awaiting a reply. If they don't come back with something, I'm hoping that you guys/gals can help me figure this out.
Please Note: There seems to be some debate on the forum about whether this product settles out with the trub, whether it is metabolized by the yeast and settles out, or whether it will cause full-on renal shutdown if you dose too much. I'm not really interested in getting involved in that debate, just for how to calculate additions to remain below the FDA threshhold. However, I understand that if silicone is metabolized or settles out, it could affect the PPM positively by way of transfer from primary to secondary. If there's non-anecdotal evidence surrounding this, please bring it to the table.
SIDE QUEST: Is silicone large enough to be caught in a 5micron filter? How about a 1micron?