RECOMMENDED USE OF PLUM WOUND AND EYEWASH pH NEUTRAL 4.9% PHOSPHATE This wound and eyewash is intended for accidents involving acids and bases. Rinse with Plum Wound and Eyewash pH Neutral 4.9% Phosphate to neutralize the pH of the hazardous substance to a safe level as quickly as possible. Continue rinsing with Plum Wound and Eyewash 0.9% Sodium Chloride until you reach a doctor or emergency room.