{HEAD ~ a liquid container}, adapted to contain a chemical bath liquid and having at least three container walls, with each of a first container wall and a second container wall being {TAIL ~ a sheet} having at least two exposed and opposing faces, having a selected thickness, and being made of a selected material drawn from the group consisting of polyetheretherketone, poly amide imide and polyphenylene sulfide; and 
{ HEAD ~ a liquid container } , adapted to contain a chemical bath liquid and having at least three container walls , with each of a first container wall and a second container wall being { TAIL ~ a sheet } having at least two exposed and opposing faces , having a selected thickness , and being made of a selected material drawn from the group consisting of polyetheretherketone , poly amide imide and polyphenylene sulfide ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH