Best Fermentation Equipment — 100ml Trial Jar (2026)
1 fermentation equipment matching capacity “100ml Trial Jar”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Fermentation Equipment UK (2026) guide.
This 100ml Trial Jar Fermentation Equipment kit is the perfect introduction to the fascinating world of home brewing and winemaking. Designed for small-scale experimentation, this compact set allows you to safely test fermentation techniques and recipes before investing in larger volumes. The included jar provides a contained environment ideal for initial trials with fruit wines, ginger beer, or even kombucha – giving you vital experience without significant material cost.
The kit contains everything you need to get started, including the 100ml glass jar itself, a fermentation airlock and stopper, and a small stirring rod. The clear glass allows you to observe the bubbling process of fermentation directly, offering valuable insights into your brew's progress. This trial jar is suitable for beginners exploring basic fermentation principles and understanding how temperature and activity impact results.
#1 Pick
Home Brew Hydrometer with Included 100 Millimeter Trial Sampling Jar- Glass
- 100ml Trial Jar
£9.95
Pros
- Amazon bestseller with a very large, consistent review base
- Trial jar needs only a small sample, saving precious brew
- Essential for tracking gravity and estimating final ABV
Cons
- Glass hydrometer needs careful handling to avoid breakage
FAQ
What type of fermentations are best suited for this 100ml jar?+
This size is ideal for fruit wines (raspberry, blackberry), ginger beer, kombucha, or small-batch mead production. The limited volume helps maintain precise temperature control crucial for successful fermentation.
What kind of airlock does the kit include?+
The kit features a standard plastic airlock with a rubber seal. This allows CO2 to escape during fermentation while preventing unwanted airborne contaminants from entering your brew, maintaining a healthy environment.
Is the glass jar suitable for long-term storage?+
While the glass is durable, this 100ml jar isn't designed for extended storage of finished products. It’s best used for initial fermentation trials and then transferring your brew to a larger, more appropriate vessel.
What temperature range should I maintain during fermentation?+
Most fruit wines ferment best between 18°C - 24°C (64°F – 75°F). Precise temperature control is vital; consider using a thermometer to monitor and regulate the environment around your jar.
What cleaning supplies should I use before starting?+
Thoroughly clean the 100ml jar with hot, soapy water. Rinse completely and allow it to dry naturally – avoid using harsh chemicals or abrasive cleaners that could damage the glass.
Does this kit include a scale for measuring ingredients?+
No, this kit focuses on the core fermentation process. You'll need to source your own measuring spoons or a small digital kitchen scale for accurately weighing out ingredients like sugar and fruit juice.
Can I use this jar for making kombucha?+
Yes, absolutely! The 100ml size is perfectly suitable for experimenting with kombucha production. Just ensure you follow proper brewing techniques to avoid contamination and achieve a balanced flavour profile.
What happens if the airlock doesn't bubble?+
A lack of bubbling often indicates a problem – typically, it could be due to excessive CO2 release or insufficient yeast activity. Check your temperature and ensure you’ve added enough yeast accordingly.
How do I stopper the fermentation jar?+
Simply push the provided stopper firmly into the airlock opening. Ensure that no air leaks around the stopper, maintaining a tight seal to prevent contamination and regulate gas exchange during the fermentation process.
What should I do with my finished brew after trial fermentation?+
Once you've observed the desired level of carbonation, carefully transfer your 100ml sample into a larger fermentation vessel appropriate for scale-up. This ensures proper aeration and allows for continued flavour development.