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Best Fermentation Equipment2 x 5 Litres + Glass (2026)

1 fermentation equipment matching capacity2 x 5 Litres + materialGlass, hand-picked from UK Amazon listings.

Not sure which one to pick? Read our Best Fermentation Equipment UK (2026) guide.

These two 5-litre glass fermentation vessels are ideal for home brewers and wine makers seeking a clear, professional solution for their brewing or winemaking process. Constructed from durable borosilicate glass, these vessels offer superior light transmission, crucial for maintaining healthy yeast cultures and ensuring consistent flavour development – a key factor in producing high-quality beverages. The generous 5-litre capacity allows you to scale up your batches without compromising on fermentation control, while the classic glass design provides an aesthetically pleasing addition to any home brewing setup.

DIAH DO IT AT HOME 2 x 5L Demijohn with Screw Cap + Airlock & Bung

#1 Pick

DIAH DO IT AT HOME 2 x 5L Demijohn with Screw Cap + Airlock & Bung
Rated 4.5 out of 5 stars (117)
  • Glass
  • 2 x 5 Litres

£24.95

Pros

  • Screw-top design is 100% leak-proof for easier handling
  • Comes as a pair, ideal for splitting or comparing batches
  • Durable glass suitable for repeated fermentation and storage use

Cons

  • 5L capacity means smaller batches than a full-size fermenter
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FAQ

What is borosilicate glass and why is it important for fermentation?+

Borosilicate glass contains a small amount of boron oxide which makes it significantly more resistant to thermal shock than standard glass. This means these vessels can withstand the temperature fluctuations common during fermentation without cracking or shattering, crucial for maintaining a stable environment.

What size tubing is recommended when transferring liquids into and out of these vessels?+

We recommend using 1/2 inch (13mm) diameter tubing for transfers. This provides sufficient flow rate to minimise splashing and sediment transfer during the often-critical stages of racking and topping up.

How do I clean these glass fermentation vessels after use?+

Thorough cleaning is essential. Use a food-grade sanitizer like Star San or Iodophor, following the manufacturer's instructions carefully. Rinse thoroughly with hot water before storing.

Can I use these vessels for multiple fermentation stages?+

Yes, you can absolutely use them for multiple stages! Just ensure you meticulously clean and sanitize between each stage to prevent contamination and maintain flavour integrity – particularly important when switching between different wort or wine types.

What temperature range are these vessels suitable for fermentation?+

These glass vessels are designed for a wide range of fermentation temperatures, typically from 18°C to 24°C (64°F to 75°F). However, always monitor your specific fermentation conditions and adjust accordingly.

Do I need any additional equipment to use these vessels?+

While not strictly essential, a carboy stopper (airlock and bung), racking cane, hydrometer, and sanitizing solution are highly recommended for a complete home brewing or winemaking setup. These accessories will significantly improve your process.

How do I properly store the fermentation vessels?+

Store them upright in a cool, dark place to protect the glass from breakage. Avoid stacking them directly on top of each other, and ensure they are completely dry before storing.

Are these vessels dishwasher safe?+

While technically possible, we do not recommend using a standard dishwasher due to the potential for thermal shock and damage to the delicate borosilicate glass. Handwashing is preferred.

What size airlock should I use with these 5-litre vessels?+

An airlock compatible with a 1/2 inch (13mm) stopper is recommended. Ensure your airlock tubing fits snugly into the stopper's hole for an airtight seal, preventing oxygen ingress.

Can I use these vessels for fruit wines or mead?+

Absolutely! These glass vessels are perfectly suitable for a wide range of fermentations including fruit wines and mead. However, monitor sugar levels carefully to ensure proper fermentation control, as fruit additions can influence the process.