Sanitize everything and preserve every batch — this 1kg of potassium metabisulphite is the most essential chemical in any home winery.
Potassium Metabisulphite (K-Meta) is the foundational preservative and sanitizer in home winemaking. It releases sulphur dioxide (SO₂) in solution, which inhibits oxidation and kills or inhibits spoilage organisms including wild yeast, bacteria, and moulds. Use it diluted in water to sanitize all equipment before and after use, and add directly to wine at stabilization to prevent re-fermentation and oxidation. Sold in a 1kg bulk pack for regular use.
- Weight: 1 kg
- Active ingredient: potassium metabisulphite (K₂S₂O₅)
- Applications: equipment sanitization and wine preservation
- Releases SO₂ to protect wine from oxidation and spoilage
Winemaker's Tip: Make a fresh 1% sulfite solution (10g per litre of water) at the start of each winemaking session and use it to rinse all equipment — it's the single most effective spoilage prevention step you can take.
Also available in 50g, 250g, and 25kg. For tablet form, see Campden Tablets.