pH BUFFER SOLUTIONS - pH 4.00 500ml Reference Red, Traceable to NIST,
Color coded pH buffer solutions offer instant recognition on sight and reduces errors. Red color for pH 4, yellow for pH 7, and blue for pH 10. Prepared for use in the calibration of pH meters. All buffers have been tested electrometrically at 25°C and are traceable to NIST. Buffer solutions are available in 500mL poly bottles, 4-liter poly bottles and 20-liter cubitainers. For colorless buffers, see 21-2098. Shown in 500mL.
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Specifications
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| Buffer, pH | 4.00 |
| Color | Red |
| Size | 500 mL |
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