A composition including nanoparticles each having an acidic polymerizable siloxane moiety. The first chip has an active surface over which the second chip is attached. The first ink path structure defines an ink path formation and ink inlet openings on opposite sides which are in fluid communication. capacity over glyoxal used alone. The samples, including the initial blood sample, are substantially free of excess air. A foaming resin is sandwiched between molds so that a hollow blow-molded foam having a ventilation path is molded, and a fluid for use in cooling the hollow blow-molded foam is allowed to flow through the ventilation path so that the hollow blow-molded foam is cooled.