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1.19811 Supelco

Nitrate standard solution

traceable to SRM from NIST NaNO₃ in H₂O 1000 mg/l NO₃ Certipur®

Synonym: Nitrate standard for aqueous matrices ready for use



Related Categories Additional Standards, Analytical Standards, Analytical/Chromatography, Chromatography, Ion Chromatography Standards,
Quality Level   100
application(s)   ion chromatography: suitable
pH   6 (20 °C in H2O)
density   1.00 g/cm3 at 20 °C
storage conditions   Store at +15°C to +25°C.


Analysis Note

Concentration     β (NO₃⁻): 990 - 1010 mg/l
Determination method:   Alkalimetric titration.
The content of this solution was determined with sodium hydroxid standard solution 0.1 mol/l .The sodium hydroxide standard solution 0.1 mol/l is adjusted by hydrochloric acid standard solution 0.1 mol/L.The hydrochloric acid standard solution is standardized and traceable to volumetric standard tris(hydroxymethyl)aminomethane (article number 1.02408). The expanded measurement uncertainty is ± 1 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 723 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard tris(hydroxymethyl)aminomethane, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.

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