PURPOSE:To obtain the subject vessel capable of complete sterilizing of inside of the vessel and taking in outside air without invading of various germs into the vessel by providing vent nozzle in circumferential wall and jointing vent tap covered with fall away-preventing cap on the nozzle. CONSTITUTION:A vent nozzle 22 is provided in circumferential wall of a young plant culturing vessel having cap 17 capable of freely putting on and of, solution supplying nozzle 13 and water discharging nozzle 16, then vent tap 23 is jointed with said nozzle, further said vent tap 23 is covered with fall away-preventing cap body 25 made to one body with the vent nozzle 22 to afford the aimed vessel preventing invasion of various germs into the vessel and capable of plant culturing to simplify sterilizing working.
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