Tissue processor

A tissue processor, comprising:

• a first retort;
• a second retort;
• a plurality of reagent bottles fluidly coupled with the first retort and the second retort;
• a plurality of infiltrating baths fluidly coupled with the first retort and the second retort;
• a pressure generating assembly fluidly coupled with the first retort, the second retort, the plurality of reagent bottles, and the plurality of infiltrating baths, the pressure generating assembly configured to provide positive or negative pressure in at least one of the first retort and the second retort, to draw or drain reagent or infiltrating material into or from the respective retort;
• and
• a rotary valve fluidly coupling the first and second retorts with the plurality of reagent bottles, and configured to selectively communicate with one of the plurality of reagent bottles with the first and second retorts, wherein the tissue processor further comprises a first trap bottle and a second trap bottle, the first trap bottle is fluidly coupled between the first retort and the pressure generating assembly, the second trap bottle is fluidly coupled between the second retort and the pressure generating assembly, the first trap bottle configured to condense reagent vapor or infiltrating material vapor from the first retort, and the second trap bottle configured to condense reagent vapor or infiltrating material vapor from the second retort.