Weight of K-Meta = Tab

[PolishWineP]

We always use Campden Tabs when making wine but are out and we are working with wines. What is the weight equivilent of dry K-Meta powder to a Campden tab? How about dry measure? Anyone?

 

[Wade E]

Dissolve 5 tsp. of sodium or Potassium meta. in 1 cup of warm
water. Use 1 tsp. of this liquid solution to equal 1 crushed Campden.

 

[PolishWineP]

Thank you! I love this place!

 

[Wade E]

Your quite welcome princess!

 

[pkcook]

PWP,


According to Wikipedia: Campden tablets typically weigh 0.44 g each and 10 of these are equivalent to one level teaspoon of sodium metabisulfite. I've always read 1/8th of a teaspoon was equal to 1 tablet, but according to this 1/10th is closer. Most people don't have a measuring spoon of 1/10th, so 1/8th is the closest.

 

[PolishWineP]

More good info. Thank you, too!

 

[NorthernWinos]

They do make this little measuring spoon for measuring k-meta to make up a tablet amount......

 

[kutya]

northern, where do you get one of those? is that hole the same size as a campden tablet??? I do think I could make one of those.... Anyone own one?????

 

[NorthernWinos]

I don't have one...try to keep tablets on hand.
I saw it in a catalog, it says to level off the top and you'll have equivalent to one campden tablet...imagine the hole is a bit bigger as the powder would be looser than a compacted tablet....
Fine Vine Wines Toy Store might have them too...or be able to get one.

 

[OGrav]

ww, Are you sure that is 5 tsp K sulfite to the cup? I have one book that was written by Penn state that uses 5 tsp to the quart saying that 1 tsp of solution equals 65 ppm in a gallon. I'm just trying to nail this down before I go down this road.
LT

 

[Wade E]

I'm just quoting what it says on the can of Vintners Harvest Fruit Base.

 

[masta]

Here is some more info on adding sulfite:
http://www.finevinewines.com/sulfites1.htm

 

[Wade E]

I'll stick to what I've read off the can of Vintners Harvest or the
Campden as I'm not going crazy with ml's or %'s. Too much math for me
after working all day.

 

[masta]

1/4 tsp k-meta for 6 gallons = ~40 ppm


Dissolve 1/4 tsp in 6 tsp of water and then use 1 tsp for a gallon of must/wine for ~ 40 ppm sulfite.

 

[Wade E]

Thats easy enough. Any idea if what the can of vintners was right Masta?

 

[OGrav]

I'm still trying to figure out the math myself

Thanks, Masta, now I have to go dig out my reloading scale and buy a graduated cylinder

. Your formula sounds a little simpler. Any extra I'll just dump in my sanitizing jug.

 

[OGrav]

Thats easy enough. Any idea if what the can of vintners was right Masta?

WW, sorry about the math,
if we go off the 1/4 tspin 6 tsp = 40ppm in gallon
thenthe same
ratiowould be 5 tsp in120 tsp(2.5C)


That would make the 5 tsp in 1C about 60% stronger.


Any idea if they specified K meta or Na meta on the can? I've read that K meta is about twice as strong as Na so the instructions might be spot on.
Regardless, I'm sure Vintners has a better handle on it then we ever will. Acid and temp might have a bigger effect on free SO2 then the 40ppm I'm trying to figure out.

 

[Wade E]

They say either but I thought the sodium was the stromger of the 2.

 

[OGrav]

K is usually more expensive if that's any indication.

 

[Joseph1]

Wade, one teaspoon of the Vintner’s Harvest solution will add about 95ppm of SO2 to one gallon. Sodium metabisulfite does add slightly more SO2 than potassium metabisulfite.