The wine is fine. Use 1 tablet per gallon of wine with the appropriate amount of sorbate when the wine is fermented dry, to stabilize. You know the wine is finished fermenting when the SG is unchanged for a few days. You will get a good level of sulphite in the wine when it is stabilized and it will be fine. You need to order at least a pound of Potassium Metabisulphite from George and use 2 TBLS. per gallon of water to sanitize equipment. C-Brite is good also if you have really dirty equipment, but if the equipment is rinsed in warm water and sanitized with the sulphite immediately after use and also before using, you shouldn't have any problems. If you are planning to make alot of wine and experiment alot, get more than a pound.