1.19899
Nitrite standard solution
traceable to SRM from NIST NaNO2 in H2O 1000 mg/l NO2 Certipur®
Synonym(s):
Nitrite standard for aqueous matrices ready foruse
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About This Item
Quality Level
technique(s)
ion chromatography: suitable
pH
7 (20 °C in H2O)
application(s)
environmental
food and beverages
format
single component solution
storage temp.
15-25°C
Analysis Note
Determination method: Cerimetric titration.
The content of this solution was determined by back-titration with Ammonium(II) ferrous sulfate (article number 1.03792) standardized by Cerium(IV) sulfate (article number 1.09092) against volumetric standard Iron(II)ethylendiammonium sulfate (article number 1.02402). The expanded measurement uncertainty is ± 0.7 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 8040 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard Iron(II)ethylendiammonium sulfate measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.
Other Notes
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Storage Class
12 - Non Combustible Liquids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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Certificates of Analysis (COA)
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Protocols
萃取化后采用格里斯法进行光度测定
Photometric determination using the Griess method subsequent to extraction
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1198990500 | 04022536181509 |