Production Guide: Reducing Copper in Copper Sulfate Treated Wines … Premium Content Access reserved for Denise Gardner Winemaking Members and Consulting Clients. Related Items:Production Guide: Wine Analysis Expected ResultsSOP: Dry Yeast FiningProtocol: Bentonite Fining & Colloid Stability TrialsProduction Guide: Juice / Wine Analysis RecommendationsChecklist: Pre-Bottle Timeline for Native Wine Grape Variety Wines