Merck CHROMATE IC-STD 1000 MG/L 500 ML

Spending Type	: Consumable
Category	: Chemical Reagent
Type	: Certified Reference Material (CRM)
SKU	: 1.19780.0500

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Deskripsi Merck CHROMATE IC-STD 1000 MG/L 500 ML

119780 Larutan kromat standar merunut SRM dari NIST K₂CrO₄ dalam H₂O 1000 mg/l CrO₄ Certipur®

atau disebut juga : Chromate standard for aqueous matrices ready foruse, Nota 1 A

Simpan pada +15°C hingga +25°C.


Concentration β (CrO₄²⁻)	990 - 1010 mg/l
Determination method: Iodometric titration. The content of this solution was determined with sodium thiosulfate standard solution (article number 1.09147) standardized against volumetric standard potassium iodate (article number 1.02404). The expanded measurement uncertainty is ± 0.4 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 136f (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard potassium iodate, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.

Concentration β (CrO₄²⁻)

990 - 1010 mg/l

Determination method: Iodometric titration.
The content of this solution was determined with sodium thiosulfate standard solution (article number 1.09147) standardized against volumetric standard potassium iodate (article number 1.02404). The expanded measurement uncertainty is ± 0.4 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 136f (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard potassium iodate, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.