Forum Rules, Notifications and Helpful Hints

Explore the community of craft distillers and discover the largest professional association dedicated to the art and science of craft distillation. ACE DISTILLER has been serving all levels, from novice enthusiasts to seasoned professionals, in the craft distilling industry since 2010.

Home › Forums › Equipment › Discoloration of copper due to low wines

  • Equipment

    Discoloration of copper due to low wines

    Posted by brewstilla on February 18, 2021 at 2:33 pm

    Ran into something I haven’t seen before. Yesterday I ran a CIP on my still for todays spirit run, PBW followed by citric as usual. This morning the copper was nice and bright, as I was loading the still with single malt low wines, I noticed the bright copper rapidly turning a dark streaky color. Even without the low wines hitting it. The low wines and heads are extra stinky, but the hearts are great. Any idea what would cause this??

    slickfloss replied 3 years, 10 months ago 3 Members · 2 Replies
  • 2 Replies

  • calwisespirits

    Member
    May 8, 2021 at 8:44 am

    I’ve had this happen before too. My best guess is sulfur. 

  • slickfloss

    Member
    May 10, 2021 at 2:44 am

    Imo it’s your copper doing its job. Still charging does produce vapors they’re gonna be low in boiling point and pretty nasty, lots of work for your copper to do!  

    You notice anything irregular/different with your ferment?

    someone with a chemistry degree will probably come around and talk shit but that’s just my .02

    Edited May 10, 2021 by SlickFlosstypo Cooler to Copper

Log in to reply.

Start of Discussion
0 of 0 replies June 2018
Now
en_USEnglish
es_ESSpanish de_DEGerman fr_FRFrench ru_RURussian en_USEnglish