Insulin, regular

(Mfr: LI)(Conc: 1 unit/mL^a)

Dopamine HCl

(Mfr: DU)(Conc: 3.2 mg/mL^a)

Remarks:

White precipitate forms immediately, dissolves quickly, and reforms in 24 hr at 23°C

Ref:

¹⁸⁷⁷