Simply blow into the sterile filter, which slightly pressurizes the carboy, causing beer to flow out. Attach the Sterile Siphon starter assembly by firmly pushing the orange or yellow carboy hood over the mouth of the carboy. Slide the stainless racking cane to the desired depth, just about the sediment level and blow into the white, sanitary air filter for 2-3 seconds. Blowing through the filter forces beer out through the racking cane, starting the siphon. There is no need to worry about contamination from your mouth, as the sanitary filter removes 99.98% of airborne bacteria.
Sterile Siphon Includes:
About the White Sterile Filter: There are two sides to the filter - an "in" and an "out". The direction you use doesn't matter, however, you want to take note of which way you first push air through it and always keep it that way. There is an arrow on the edge of the filter housing that we use to keep the air flow going one direction when using it.