To quote from George Fix ( Principles of Brewing Science)
"Yeasts also require trace quantities of copper (0.012ppm)"
Also when I started work most of the FVs at the brewery were copper squares and we never had any yeast problems.
Hi :hat: ,
I am an AG brewer with a bit of experience although I have not brewed for a couple of years.
Finally got round to registering on this fantastic forum rather than just lurking.
Regards - ayepee