An ultra-high temperature pasteurized liquid milk concentrate provides a reconstituted milk beverage that tastes like fresh milk. At least one beam exiting a modulator is collimated and reaches the unguided as a substantially collimated beam. The apparatus enables an area to be sampled quickly and efficiently, while minimizing cross-contamination of a sample and incorrect placement of a sample in an analyzer. New solid forms of resins and of thermoset composites that may be used in the implementation of these processes.