Standard Cell Solution for Hach pHD Differential pH and ORP Sensors, packaged in resealable 500 mL bottle. Used to replenish standard cell chamber while replacing salt bridge.
| Concentration | pH 7.0 |
| Instrument | pHD |
| Parameter | pH |
| pH Range | 7 buffer solution |
| Quantity | 500 mL |
| Volume | 500 mL |

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