BrewMaster Potassium Metabisulphite 275g

Potassium Metabisulphite is a sulphur-based compound that is used primarily to sterilise wine and cider making equipment and to protect the finished product. It works by releasing sulphur dioxide (SO2) into the wine, which helps to kill bacteria and inhibit the growth of most wild yeast, ensuring a clean and controlled fermentation.

It can also be used to eliminate both free chlorine and the more stable form, chloramine, from brewing and make-up water.

One gram of potassium metabisulphite will impart approximately 60 parts-per-million of sulphur dioxide (SO2) to each litre of wine. (Please note that this is an approximation; the exact amount of free SO2 can depend on the pH and tannin content of the wine).

As a guide, to treat wine must: Add 0.2g of potassium metabisulphite per litre of juice. Pre-dissolve it in a small quantity of cool water before adding to the must. Allow the must to ventilate in an open container for 24 hours before adding your chosen yeast.

It can also be used as a dependable all-round powdered sanitiser suited to almost any brewing or distilling setup. Ideal for those who want a classic sulphite-based sanitising method that is effective, economical, and widely used in home brewing. Helps prevent spoilage by controlling wild yeast and bacteria on equipment surfaces.

Instructions for use as a sanitiser:

Wash cleaned equipment (fermenters, bottles, siphons, etc.) in a solution of 40 g Potassium Metabisulphite to 4.5 L of warm water. Allow equipment to stand for 30 minutes to dry, then rinse with clean cold water before use.

Ingredients: Potassium Metabisulphite 100%.