Manufacturing Process Phase A: Combine all ingredients and stir until everything is completely dissolved. Phase B: Combine phase B separately and add phase B to phase A under soft stirring. Stir until both phases are mixed. Phace C: Add phenylpropanol to phase A+B. Adjust th pH to 5.5 +_ 0.05. Specification Appearance: Transparent liquid pH: 5.5 +_ 0.05 Stability: Microbiological stability proven, nohas not