Best Fermentation Equipment — Standard Demijohn + Plastic & Rubber (2026)
2 fermentation equipment matching capacity “Standard Demijohn” + material “Plastic & Rubber”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Fermentation Equipment UK (2026) guide.
This selection of fermentation equipment focuses on standard demijohns constructed from plastic and rubber – ideal for both home brewing and winemaking projects. These demijohns offer a robust, chemically inert environment crucial for healthy yeast activity and consistent flavour development. Constructed with durable plastic vessels and reinforced rubber fittings, these containers are designed to withstand the pressures involved in fermentation while remaining easy to clean.
These standard demijohns provide ample space (typically 5-10 litres) for your brewing or winemaking process, allowing you to scale up your operations as your skills grow. The plastic construction is resistant to corrosion and UV degradation, ensuring longevity, while the rubber components provide a secure seal vital for maintaining anaerobic conditions within the vessel. They are particularly well suited for fruit wines and larger batches of ale.
Investing in these demijohns offers a solid foundation for any brewing or winemaking enthusiast. The combination of capacity and material choice delivers both performance and value, offering a reliable container that will contribute significantly to the quality of your finished product. Please note that the specific dimensions may vary slightly depending on the manufacturer.
#1 Pick
4 Pcs Fermentation Airlocks and 2 Pcs Bored Rubber Bungs Brewing Airlock for Home Brew Beer Wine Making- Plastic & Rubber
- Standard Demijohn
£6.69
Pros
- Handy multipack for brewers running several vessels at once
- Simple bubble-style airlocks are easy to read and clean
- Very low cost entry point for fermentation monitoring
Cons
- Basic plastic construction compared to glass airlocks
#2 Pick
Brewing Mate 2 x Demijohn Airlock and Bung Set, Bubbler Air Lock for Home Brewing- Plastic & Rubber
- Standard Demijohn
£9.99
Pros
- Set of 2 bubbler airlocks with demijohn bung and grommet included
- Keeps airborne bacteria out while fermentation gases escape
- Works with both demijohns and fermenting buckets
Cons
- Rubber bung fit can vary slightly between demijohn necks
FAQ
What size demijohn is best for a 20-litre batch?+
A 20-litre demijohn would be an excellent choice, providing ample headspace for fermentation and allowing for efficient racking. Overfilling can lead to excessive pressure buildup.
Are these demijohns suitable for red wine?+
Yes, they are generally well-suited for red wines. However, ensure the plastic is food grade and approved for alcohol contact, as some plastics may leach flavours over extended periods.
Do I need to purchase separate rubber closures?+
Most demijohns will come with a standard rubber bung or closure designed to create an airtight seal. Check the product listing for confirmation of included components.
How should I clean these plastic demijohns after use?+
Thorough cleaning is essential! Use hot water, a food-grade sanitizer (like Star San), and scrub gently to remove all traces of yeast and sediment. Rinse thoroughly with warm water.
Can I use these demijohns for making sparkling wine?+
While possible, it’s not ideal. The increased pressure from carbonation can put significant stress on the plastic. Monitor fermentation closely and ensure proper venting to prevent overpressure.
What kind of stopper should I use?+
A rubber bung or closure specifically designed for fermentation vessels is recommended, ensuring an airtight seal and preventing oxygen ingress. Check the product description for compatible options.
Are these demijohns dishwasher safe?+
Dishwasher use isn't always recommended; high temperatures can damage plastic components. Handwashing with warm water is generally safer and preserves the integrity of the vessel.
How do I prevent contamination during fermentation?+
Maintaining a clean environment, using sanitized equipment, and minimizing exposure to air are crucial steps in preventing contamination. Regular racking is also vital for removing sediment.
What is the typical lifespan of plastic demijohns?+
With proper care and storage (away from direct sunlight), these demijohns should last 5-10 years, provided they are cleaned regularly. Check for any signs of cracking or degradation.
What is the plastic material made of?+
Typically, these demijohns are manufactured from polyethylene (PE) or polypropylene (PP), both food-grade plastics known for their durability and resistance to chemicals. Always verify the specific plastic type listed on the product.