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2974649 Natural Water Standard Solution, 300 ppm

2974649 Hach

Natural Water Standard Solution is required for conductivity meter calibration in laboratory and field analysis.

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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)

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