Easy to read. 16 foot single roll dispenser. Immediate results. Accurate color chart. Accurately and quickly monitor your body's pH. To be used in conjunction with pH-Basic. pH-Basic is formulated to assist in balancing the pH of individuals who are too acidic. It also serves to enhance activity and efficiency of all enzymes in the body (digestive and metabolic). For more information, see The Importance of pH Balance at www.enzymedica.com or call toll-free. Too acidic: 4.5, 5.0, 5.5, 6.0. Ideal: 6.5, 7.0, 7.5.