A dispensing apparatus and methods for use with, e.g., a multi-component reactive material process. In one embodiment, the apparatus comprises a completely disposable static mixer, manifold and atomizer cap assembly. Such a configuration allows for, inter alia, reduced cost, rapid component changes with minimal material waste, as well as reducing or eliminating the use of hazardous solvents. Precise and repeatable configuration of the dispensing assembly is also provided by way of the substantially fixed relationship of the critical components and surfaces therein.
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