Natural Water Standard Solution is required for conductivity meter calibration in laboratory and field analysis.
Natural Water Standard Solution is required for conductivity instrument calibration. The concentration value of the solution: 445 µS/cm ± 4.5 µS/cm at 25°C. Each bottle has a capacity of 500 mL. Natural Water Standard Solution (p/n 2974649) is traceable to NIST standard reference materials. The solution is intended for use only for laboratory and field analysis.
Storage conditions
It is required to store the solution at the temperature from 10 °C to 25 °C in a place protected from direct sunlight. It is recommended to keep the solution for up to 3 months after opening.
| Brand | Hach |
| Parameter | TDS |
| Formula | Na₂SO₄, Na₂CO₃, NaCl |
| Concentration | 300 ppm ± 3 ppm |
| Concentration (2) | 445 µS/cm ± 4.5 µS/cm |
| NIST traceable | Yes |
| Quantity | 500ml |
| Storage conditions | 10 °C - 25 °C (protected from light) |
