Quote Originally Posted by kb3lms View Post
Any way I can convert the metabisulfite for use before I order more sulfite? Is it worth doing?
Sodium Metabisulfite is a dehydrated form of Sodium Bisulfite: 2 NaHSO3 <----> Na2S2O5 + H2O

If you dissolve them in water, they will be the same. In aqueous solution you can convert the Sodium Metabisulfite to Sodium Sulfite by adding 2 moles of NaOH per mole of Na2S2O5.