Buchi glass 20 liters pilot reactor with New QVF Duran Glass pilot reactor cover (lid ) , 7-neck , flat ground joint OD 33.5 cm, ID 30 cm, . central Neck flat ground OD 10.5 cm, side neck ball ground joint OD 11 cm, , two side necks OD 40 mm, ball joint, two necks OD 30 mm ball ground joints. More info printed on the reactor: M607611-535305 SK 34699. Lot ulblboxnear