Natural Water Standard Solution is required for conductivity calibration in laboratory and field analysis.
Natural Water Standard Solution (p/n 2974549) is required for calibration and accuracy control of instruments for reliable conductivity measurement. The concentration value of the solution is 46.7 µS/cm ± 0.5 µS/cm at the temperature of 25°C. The volume of each bottle is 500 mL. Natural Water Standard Solution is traceable to NIST standard reference materials.
Storage conditions
Natural Water Standard Solution is required to be stored at the temperature from 10 °C to 25 °C. The solution is required to be protected from direct sunlight. The shelf life after opening: up to 3 months.
| Brand | Hach |
| Parameter | TDS |
| Formula | Na₂SO₄, Na₂CO₃, NaCl |
| Concentration | 30 ppm ± 0.3 ppm |
| Concentration (2) | 46.7 µS/cm ± 0.5 µS/cm |
| NIST traceable | Yes |
| Quantity | 500ml |
| Storage conditions | 10 °C - 25 °C (protected from light) |
