Red pH 4.00 Standard Buffer Solution, 500mL

This 500mL bottle of 4.00 pH standard buffer solution is made with acetic acid and sodium acetate to produce a stable acidic pH of 4 at 25°C. The solution is dyed red for easy identification among other buffer solutions and is used for calibrating pH meters and maintaining a specified pH. The bottle includes safe handling, storage, directions for use, and temperature variation information printed directly on the label. Shelf life is 24 months. Manufactured in the United States. For laboratory use only.