I would suggest to use the following guidelines when using K-meta:
In one gallon 1/8 tsp of K-meta should yield 57 mg/l or 57 ppm free SO2 (216 / 3.78)
Yesterday was going to be the day for bottling my "Black Widow Blackberry" as well as a batch of Muscadine. I ended up having to leave to help out a friend and did not get back until late last night so back to storage they went until this weekend. I did manage to get this picture though.
I also drew me off a little sample of a Strawberry/Reisling that will be ready to bottle soon.
Will be adding some red grape concentrate to this prior to bottling to give it a redder color. A trick NW taught me that works really well.