Abstract: An apparatus includes a chamber container and a tray. The chamber container has a first portion and a second portion removably coupled to the first portion. The first and second portions collectively define an inner volume. The tray is configured to be removably disposed within the inner volume of the chamber container. The tray includes a first portion and a second portion coupled to the first portion via a hinge. The first portion includes a first retention surface. The second portion includes a second retention surface. The tray is configured to receive a biodiffusion chamber between the first portion and the second portion such that the first retention surface and the second retention surface engage a portion of the biodiffusion chamber to (1) place the biodiffusion chamber in a predetermined orientation and (2) maintain the biodiffusion chamber in a substantially fixed position relative to the tray.