Demijohn Bored Bung 28-30mm - with an airlock hole.

Fits perfectly a 5l (FLIP TOP ONLY) glass demijohn for a tight seal. 
Not compatible with the wide mouth screw top demijohns.

Typically made from rubber or silicon.

WLP690 Acetobacter aceti is a gram-negative rod bacterium commonly known as the organism responsible for vinegar production. Acetobacter aceti will oxidize ethanol into acetic acid and is found in many fermented products. This organism can be used as part of a kombucha culture, or can be used as a pure culture for vinegar production. Ideal temperature is 25-30C for growth but will more slowly oxidize ethanol at 20C.

Solid silicon bung that is tapered - 20mm-35mm. Please note that this is a solid bung - no hole for airlock.

Stopper with hole #9.5 38mm-46mm - fits the HS 5L Glass Demijohn with Cap (wide mouth)

Stopper without hole #9.5 38mm–46mm - fits the HS 5L Glass Demijohn with Cap (wide mouth)

This low energy RAPT enabled Bluetooth Thermometer is compatible with the Gen 4 BrewZillas and RAPT Temperature Controllers and RAPT Fermentation Chambers. It will not work without one or more of these devices.

By receiving multiple BLE thermometer sensors the BrewZilla can make smarter and more automated decisions on how to control the brewing or distillilation process.  For example a BLE thermometer can be placed into your coolant water so you get an alarm if the temperature is too high, a BLE thermometer can be put into the middle of the malt pipe so you can more accurately control elements switching on/off to achieve a core malt pipe temperature etc.

WLP685 Gluconobacter oxydans is a gram-negative rod bacterium belonging to the family Acetobacteraceae. This aerobic organism is common in fermented beverages like kombucha and kefir. Gluconobacter oxidizes ethanol into acids such as acetic acid and gluconic acid. Optimal growth between 25-30C but is also known to be a very slow grower. It will more slowly oxidize ethanol at 20C.

Silicon bung with hole for airlock. Tapered - 20mm-35mm. Suitable stopper for most carboys and flasks.