Alconox Citranox is a phosphate-free, concentrated cleaner and metal brightener, and it is packaged in a 1 gallon plastic bottle. It provides high performance removal of metal oxides, scale, salts, and inorganic residues in manual and ultrasonic cleaning. The corrosion inhibited formula is free rinsing for reliable results with no interfering residues. This cleaner is ideal for trace metal analysis. It is USDA authorized. Dilute 2:100. pH: 2.5. Volume: 1 Gallon. Per each. Alconox #: 1801.