1.19780
Chromate standard solution
traceable to SRM of NIST K2CrO4 in H2O 1000 mg/l CrO4 Certipur®
Sinonimo/i:
Chromate standard for aqueous matrices ready foruse, Nota 1 A
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Informazioni su questo articolo
NACRES:
NA.24
UNSPSC Code:
41116107
Quality Segment
technique(s)
ion chromatography: suitable
pH
7 (20 °C in H2O)
density
1.0 g/cm3 at 20 °C
application(s)
environmental
food and beverages
format
single component solution
storage temp.
15-25°C
Analysis Note
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.
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.
Other Notes
We now offer a certified reference material alternative for this product that has the same composition and is manufactured under ISO 17034 accreditation.
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany
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Danger
hcodes
Hazard Classifications
Carc. 1B Inhalation - Muta. 1B
Classe di stoccaggio
6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificati d'analisi (COA)
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