Cleaning new bottles
Cleaning new bottles for beer bottling is crucial for the quality of the end product. The "classic" beer bottle is the 0.33L long neck bottle. Of course, other bottle shapes are also suitable, but we usually recommend brown bottles for bottling beer to avoid the well-known "light taste". Before the bottles are used for the first time, it is advisable to clean them thoroughly. This can be done by washing them out with boiling water to remove any germs and bacteria. This simple step ensures that the beer matures optimally in the fresh bottles and can develop its full flavor.
Cleaning used bottles
If you want to use used bottles for bottling beer, it is advisable to rinse them out with water once after drinking to make it easier to clean them later. To remove impurities, you should first carry out a mechanical cleaning using a bottle brush. It is helpful to soak the bottles in lukewarm water beforehand to make it easier to remove dirt or other impurities. Once the bottles have been pre-cleaned, they are disinfected. To do this, simply dissolve the PURO OXI cleaning agent at a dosage of 4g/L in warm to hot water, leave the bottles to soak for 3-5 minutes and then allow to drain. We do not recommend disinfecting the bottles by heating them in the oven! This can cause microcracks in the bottles, which can lead to the bottles bursting during secondary fermentation.
Cleaning swing-top bottles
Particular attention must be paid to cleaning the rubber seal of swing-top bottles! A biofilm tends to form here, which can cause infections in the beer.
Cleaning brewing and fermentation vessels
Brewing and fermentation vessels should not be cleaned with surfactants (washing-up liquid), as they foam up a lot and are difficult to remove.
When cleaning brewing and fermentation vessels, a mixture of hot water and PURO OXI can also be used.
Attention, the following cleaning is only recommended for advanced brewers!
Always wear chemical protection gloves and safety goggles when using chemical solutions!
If you want your brewing or fermentation vessel to be particularly clean, you can use the following cleaning program as a guide:
Use a 55-75°C warm alkaline cleaning solution, e.g. caustic soda or sodium hydroxide, at a concentration of 0.5-2%. Allow this solution to act or, if possible, to rotate in the vessel, e.g. by using a pump, for 10-20 minutes.
Then rinse the container thoroughly with similarly warm water to remove any residual lye.
The container is then disinfected. Use an acidic solution at 55-75°C, such as phosphoric acid or hydrogen peroxide at a concentration of 0.5-1%. Allow this solution to act or, if possible, to rotate in the vessel, e.g. by using a pump, for 10-20 minutes.
Then rinse the container thoroughly with similarly warm water to remove any acid residues.
Braumarkt Beer Brewing Guide