Use "reagent" in a sentence

1. blood sample (roughly 2ml) of Reagent B was added

2. To the above solution, 500µl of Reagent C was added and mixed

3. He affirmed his significance as a conscious rational animal proceeding syllogistically from the known to the unknown and a conscious rational reagent between a micro and a macrocosm ineluctably constructed upon the incertitude of the void