Buffer solution DuraCal pH 4.01 (25 °C)

Buffer solution DuraCal pH 4.01 (25 °C) is a ready-to-use pH calibration buffer tinted red and supplied with a DAkkS certificate. It is intended for accurate calibration and verification of pH electrodes and meters at the acidic reference point of pH 4.01 at 25 °C. With a density of approximately 1 g/cm³ and a boiling point of 100 °C, the aqueous solution remains practical under normal laboratory conditions. The red tint helps distinguish this standard from other buffers on the bench and reduces mix-ups during multi-point calibration. Packaged as 500 ml, the buffer supports repeated calibration cycles in analytical, environmental, pharmaceutical and industrial laboratories. This DuraCal buffer from manufacturer HAMILTON addresses workflows that require documented traceability through DAkkS certification. Typical uses include routine electrode calibration, instrument qualification and quality-control checks where a certified pH 4.01 standard is specified. The convenient volume suits both high-throughput benches and occasional calibration without frequent bottle changes.

Key features

• Pack sizes: 250 ml, 1500 ml, 3 l, 5 l, 10 l, 25 l
• UNSPSC: 41116107
• Technical Information Sheet:
• Safety Data Sheet: