Comparison : Item # QRA-20-1, Reaction Flask, Cylindrical, Jacketed, Glass
Item # QRA-20-2, Reaction Flask, Cylindrical, Jacketed, Glass
Item # QRA-20-3, Reaction Flask, Cylindrical, Jacketed, Glass
Item # QRA-20-4, Reaction Flask, Cylindrical, Jacketed, Glass
Item # QRA-20-5, Reaction Flask, Cylindrical, Jacketed, Glass