Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Copper Verdigris or Copper Chloride from wort chiller
Reply
 
Thread Tools
Old 09-17-2012, 03:50 AM   #1
ANewrBrewr
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: Fort Collins, CO
Posts: 71
Liked 14 Times on 9 Posts
Likes Given: 57

Default Copper Verdigris or Copper Chloride from wort chiller

There seems to be little info on this subject, so I figured I'd ask. Last night I was brewing my Fall seasonal, Chocolate Pumpkin Porter, and I realized that my copper immersion wort chiller had a blue or green color to it. Just assuming it was harmless, and having a few homebrews at this time, I just tossed it in the wort for the last fifteen to sanitize and carried on. However now I'm reading the danger of Verdigris...some say I'll be fine, some say I'll die!! FYI-This wort chiller is normally used as a pre-chiller in a salt bath, and I know high amounts of salt will react with copper forming, copper chloride. Is my beer safe? It's only a 5 gallon batch.


ANewrBrewr is offline
 
Reply With Quote
Old 09-17-2012, 01:15 PM   #2
Homercidal
Licensed Sensual Massage Therapist.
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
Homercidal's Avatar
Recipes 
 
Join Date: Feb 2008
Location: Reed City, MI
Posts: 27,303
Liked 3632 Times on 2470 Posts
Likes Given: 2419

Default

I think you'd want to remove as much as possible with an acid wash first. However, know that the yeast will eat a certain amount of the copper, so once you've remove the excess you should be fine.

I think the trick is to acid wash it clean, then try not to touch it too much after using. A good rinse will suffice to get it clean after you are done using it, and then store in a dry place.


Homercidal is offline
ANewrBrewr Likes This 
Reply With Quote
Old 09-17-2012, 03:14 PM   #3
ANewrBrewr
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2011
Location: Fort Collins, CO
Posts: 71
Liked 14 Times on 9 Posts
Likes Given: 57

Default

Quote:
Originally Posted by Homercidal View Post
I think you'd want to remove as much as possible with an acid wash first. However, know that the yeast will eat a certain amount of the copper, so once you've remove the excess you should be fine.

I think the trick is to acid wash it clean, then try not to touch it too much after using. A good rinse will suffice to get it clean after you are done using it, and then store in a dry place.
Sage advice, however I have already done the deed. A buddy of mine just tossed the chiller in the wort before I could clean it off. So all of that blue/green stuff is now in my wort.
ANewrBrewr is offline
 
Reply With Quote
Old 09-17-2012, 05:42 PM   #4
BBBF
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Location: Chicago
Posts: 1,234
Liked 77 Times on 59 Posts
Likes Given: 34

Default

I recently listened to an older BN podcast and someone emailed an similar question. John Palmer said a tiny amount of the green stuff isn't going to kill you. Clean it off to be safe in future brews, but if it was a small amount, you'll live this time.
BBBF is offline
ANewrBrewr Likes This 
Reply With Quote
Old 09-18-2012, 05:01 PM   #5
zachattack
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2012
Location: , MA
Posts: 2,666
Liked 267 Times on 229 Posts
Likes Given: 157

Default

I think you nailed it, it's definitely due to the salt bath. If you don't store the copper in there and rinse it well after you pull it out this shouldn't happen in the future. Copper will naturally form a dark oxide layer (not blue or green!) which is harmless.


zachattack is offline
ANewrBrewr Likes This 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Copper Verdigris or Copper Clhoride from wort chiller ANewrBrewr Equipment/Sanitation 2 09-20-2012 05:31 PM
DYI - wort copper chiller Manny_E Equipment/Sanitation 3 09-17-2012 01:48 AM
50' 1/2" copper wort chiller Naptown Equipment/Sanitation 5 05-18-2012 03:47 PM
best way to clean your copper wort chiller Toecutter Equipment/Sanitation 10 02-23-2012 04:00 AM
non-copper wort chiller Comos Equipment/Sanitation 12 01-11-2007 03:12 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS