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Airlock 2-bubble with rubber cap ∅65mm

SKU: TXP0032
EAN: 2000000027395
Brand: Polsinelli
Unit: pc
Stock qty: 12
Price:
9,00 €
Qty.: - +
   - or -   

Airlock for Fermentation Vessel - Quality Protection During Fermentation Process

A reliable airlock ensures the success of the process in your fermentation vessel. This 2-bubble model is specifically designed for containers with volumes of 1-50 liters and is installed in a 9 mm opening.

Main Features of the Airlock

  • 65 mm rubber cork for bottle neck
  • Effectively protects against flies and contamination
  • Prevents oxidation process
  • Suitable for wide range of fermentation uses

Working Principle of the Airlock

The airlock works through a siphon system where water prevents outside air access. Carbon dioxide produced during fermentation escapes through the airlock due to overpressure, maintaining optimal conditions in the container.

Maintenance and Usage

Regular checking and liquid refilling is necessary as water in the airlock may evaporate. Instead of regular water, a 10% sulphite solution can be used for disinfection. During cleaning, note that this model requires more thorough maintenance compared to cylindrical models.

Frequently asked questions about this product

How does a two-bubble airlock work, and why two bubbles?

Water held in the two chambers forms a one-way barrier: carbon dioxide produced during fermentation bubbles up and escapes, while outside air, insects and microbes cannot pass back in. The two-bubble (S-shaped) design keeps the water seal stable even during vigorous fermentation.

How much water should I add, and how do I maintain the seal?

Fill the airlock to the marked level with clean water (some makers add a little sanitiser solution). Check it regularly, because water can evaporate or be pushed out during active fermentation, and top it up so the seal is never lost.

Which container and bung size does this version fit?

It is designed for vessels of 1-50 litres and seats in a 9 mm hole, and this version comes with a 65 mm rubber stopper to match a 65 mm opening. Confirm that your vessel's neck or opening matches before buying.

What common mistakes should I avoid?

Do not let the water dry out, as that breaks the seal; do not overfill, or liquid can be sucked into the must if the temperature drops; and clean and sanitise the airlock between batches to prevent contamination.

lumav_meta_description_de 2-Blasen-Gärspund für 1-50L Behälter, ∅65mm Gummikappe für 9mm Öffnung. Schützt vor Fliegen und Verunreinigung.
lumav_meta_description_en 2-bubble fermentation airlock for 1-50L vessels, ∅65mm rubber cap fits 9mm opening. Protects against flies and contamination.
lumav_meta_description_et 2-mulliline käärimislukk 1-50L anumatele, ∅65mm kummikork 9mm avale. Kaitseb kärbeste ja saastumise eest.
lumav_meta_description_fi 2-kuplainen käymislukko 1-50L astioille, ∅65mm kumitulppa 9mm aukkoon. Suojaa kärpäsiltä ja saastumiselta.
lumav_meta_description_lt 2 burbulų fermentacijos vožtuvas 1-50L talpykloms, ∅65mm guminis kamštelis 9mm angai. Apsaugo nuo musių ir užteršimo.
lumav_meta_description_lv 2-burbuļu raudzēšanas korķis 1-50L traukiem, ∅65mm gumijas korķis 9mm atverei. Aizsargā no mušām un piesārņojuma.
lumav_meta_description_sv 2-bubbla jäsningsrör för 1-50L kärl, ∅65mm gummipropp för 9mm öppning. Skyddar mot flugor och kontamination.
lumav_meta_keywords_de Gärspund, Gärverschluss, 2-Blasen, 65mm Gummikappe, Polsinelli
lumav_meta_keywords_en airlock, fermentation lock, 2-bubble, 65mm rubber cap, Polsinelli
lumav_meta_keywords_et õhulukk, käärimislukk, 2-mulli, 65mm kummikork, Polsinelli
lumav_meta_keywords_fi käymislukko, vedenlukko, 2-kupla, 65mm kumitulppa, Polsinelli
lumav_meta_keywords_lt fermentacijos vožtuvas, vandens spynelė, 2 burbulų, 65mm kamštelis, Polsinelli
lumav_meta_keywords_lv raudzēšanas korķis, ūdens aizturis, 2-burbuļu, 65mm gumijas korķis, Polsinelli
lumav_meta_keywords_sv jäsningsrör, jäsningslås, 2-bubbla, 65mm gummipropp, Polsinelli
lumav_meta_title_de Gärspund 2-Blasen ∅65mm mit Gummikappe · FERMETECH
lumav_meta_title_en Airlock 2-bubble ∅65mm with Rubber Cap · FERMETECH
lumav_meta_title_et Õhulukk 2-mulliga ∅65mm kummikorgiga · FERMETECH
lumav_meta_title_fi Käymislukko 2-kupla ∅65mm kumitulpalla · FERMETECH
lumav_meta_title_lt Fermentacijos vožtuvas 2 burbulų ∅65mm · FERMETECH
lumav_meta_title_lv Raudzēšanas korķis 2-burbuļu ∅65mm · FERMETECH
lumav_meta_title_sv Jäsningsrör 2-bubbla ∅65mm med gummipropp · FERMETECH
Weight (kg) 0.090000
High (m) 0.095
Width (m) 0.08
Length (m) 0.08
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The heart of FERMETECH is experience and scientific approach – experience dating back to 2009, which we have continuously refined. Our slogan "The Power of Science, Perfect Results" reflects our commitment to applying the best knowledge to achieve top-level outcomes. We are trusted because our operations are guided by the principle – quality and scientific precision first, then price category. Thousands of solutions based on our technology across Estonia speak for themselves, testifying that we are always there for our customers both before and after purchase. Our specialists understand that fermentation processes require both scientific precision and practical experience. That's why we offer not just equipment, but comprehensive solutions based on knowledge accumulated over years. Science-based quality, technical support, and precision are not just words for us, but real principles that guide our daily work for the benefit of all clients. FERMETECH has the same big heart as before, but now enhanced with the power of science to support your perfect results. Discover how the power of science can help you achieve perfect results in your next project.