57% or 50% SO2 ?

[hector]

Hi there !

I read recently in an article that K-meta is THEORETICALLY 57% SO2 , but

K-meta yields PRACTICALLY 35-50% SO2 !

I'm going to use K-meta powder and I'd like to know , how would those of you

who use the powder instead of Campden tablets determine the amount of

K-meta solution to be added to the Wine at any stage ?

I mean , on which Basis do you work ? 57% or 50% ?

Hector

 

[arcticsid]

I'd like to hear this one too. Been confused on this myself since the begining.
Troy

 

[Wade E]

I dont get that technical about it to behonest. I add smaller amounts and adjust up with the use of S02 tests or just leave it a tad shy. We dont have to be perfect here, just in the ball park!

 

[Manimal]

Just like Wade said, it doesn't have to be super accurate. From my understanding, most winemakers use the 50% figure to gauge their SO2 additions. Using that figure, 10g/hl will provide 50 mg/l total SO2.