Vessel: Total volume: 5L, working volume: 3.5L. Specialized borosilicate glass vessel with flatstainless steel (316L)top-plate and bottom end. Autoclavable. Stirrer: Drive with AC motor, speedadjustable. Direct-coupled mechanical drive from top, with mechanicalseal. Solid stirrer shaftwith 2 pieces of 6-blade disk impeller and 1 set of foam breaker. Rotate speedrange: 50-1000rpm. Aeration: With stainless steel ring spargerin the vessel and silica gel tube and air filter outside. Thermal circuit: Electrical heating unitunder the bottom end of vessel; piping and all required valves to be connectedto cooling water supply. Peristaltic pumps: 4 peristaltic pumps eachassignable to function for acid/alkali, anti-foam and nutrient feeding. Eachpump including perforation needles and silicone hose. Automatic or manualcontrol. Control system: Various controller forchoose. Details: BIOTECH-7000, BIOTECH-9000