Technaflora pH Up and pH Down TECHNAFLORA PH DOWN 4 LITER(4/ Technafloras pH Up and pH Down enable the gardener to moderate and maintain optimum pH levels. The pH scale is a measure that describes the relative acidity or alkalinity of a solution or medium. Both pH-balancing aids are manufactured using the highest-quality ingredients: potassium hydroxide to raise pH, and nitric acid to lower pH. While ensuring stringent industry safety standards are met, Technafloras pH Up and pH Down are potent and effective in small doses. Manufacturer's Product Information 2007 MSRP Each $ 18.68 Case Weight 40.92 LB Case Dimensions 12. x 12. x 12. IN Case Quantity 4 NOTE: CANNOT SHIP VIA UPS.