The fermentation lock or airlock is a device used in beer brewing and wine making that allows carbon dioxide released by the beer to escape the fermenter, while not allowing air to enter the fermenter, thus avoiding oxidation.
Most wood blinds are treated with a special finish to repel dirt and stains. Wood blinds can be cleaned with a good quality furniture polish and a soft cloth or clean sock. Spray the furniture polish on the cloth and wipe each slat individually. Avoid touching the cords. For heavier cleaning, you can use plain water, but be careful not to saturate the wood.
Brushes. If you have a lot of dust on your camera one good tool to get the big stuff off is a brush. Get one with fine and soft hair (camel hair) to avoid scratching your lens. Similarly you might like to invest in a lens cleaning pen which has a retractable brush on one end an a cleaning pad on the other.rushes. If you have a lot of dust on your camera one good tool to get the big stuff off is a brush. Get one with fine and soft hair (camel hair) to avoid scratching your lens. Similarly you might like to invest in a lens cleaning pen which has a retractable brush on one end an a cleaning pad on the other.