Hanna Instruments-70465 Reagent for hydrogen peroxide titration (25 mL)Reagent for hydrogen peroxide titration (25 mL) Reagent for hydrogen peroxide titration (25 mL) Hanna Instruments 70465 is a hydrogen peroxide reagent for use in standard titrations. Hanna titration solutions and reagents have the lot number and expiry date clearly marked on the label. Bottles are air tight with a tamper proof seal to ensure the quality of the solution.