A sampling device and associated methods for collecting a plurality of samples of a solution in a medical sterilization device. The sampling device includes a base configured to support a plurality of vessels, and a cover. The cover and the vessels define an orientation in relation to each other with the orientation having a first position permitting ingress of the solution into a first vessel and preventing ingress of the solution into the second vessel, a second position permitting ingress of the solution into a second vessel and preventing ingress of the solution into the first vessel. The sampling device may alternatively comprise a plurality of covers each coupled to one of the vessels. Actuators may move the covers between configurations permitting and preventing ingress of the solution into the vessels. Control of the covers may be based on analytical characteristics measured in by a sensor within a flow path.
