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BACKUP WINE
A jar of white potassium metabisulfite powder next to a small scale
Yeast & Additives

Potassium Metabisulfite (Bulk K-Meta)

Bulk sulfite powder for sanitizing and protecting wine from oxidation.

Russ-approvedBest for big batchesBuy once

≈ $14–$16price range

K-meta is the active ingredient in Campden tablets, but cheaper per dose and adjustable. 1/4 tsp per 6 gallons gives roughly 50 ppm SO2.

Use a scale for anything aging more than a year. Eyeballing leads to brown wine.

Where to buy

We don't sell this — these links go to retailers who do. We may earn a small commission at no extra cost to you.

AmazonPrimary pick$14MoreWine$16Northern Brewer$15

Why we like it

Cheaper than tablets at scale. Lasts forever in a sealed jar.

Who it's for

Mass producers, premium-batch winemakers, anyone with a Vinmetrica.

What's in the box

  • 1 lb jar
  • Soluble in water
  • Use scale for accuracy
  • Store sealed and dry

Goes well with

A small bottle of white Campden tablets spilled onto a wooden surface next to a glass of red wine
Cleaning$7–$8
Russ & Todd approvedBeginner top pick

Campden Tablets (Potassium Metabisulfite)

Pre-measured sulfite tablets for sanitizing equipment and dosing must.

See where to buy →priced 2025-11-20
A small bag of potassium sorbate powder next to a jar of homemade fruit wine
Yeast & Additives$7–$8
Russ & Todd approved

Potassium Sorbate

Stops yeast from re-fermenting after you back-sweeten.

See where to buy →priced 2025-11-20
A Vinmetrica SC-300 SO2 sulfite analyzer device with electrode and sample beaker on a wooden workbench
Testing$269–$289
Russ-approvedBest for big batchesEditor's choice

Vinmetrica SC-300 SO2 Analyzer

The serious instrument for serious aging. Tells you free SO2 in 60 seconds.

See where to buy →priced 2025-11-20