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1.19899

Supelco

Nitrite standard solution

traceable to SRM from NIST NaNO₂ in H₂O 1000 mg/l NO₂ Certipur®

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Synonym(s):
Nitrite standard for aqueous matrices ready foruse

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

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Sulfate standard solution traceable to SRM from NIST Na₂SO₄ in H₂O 1000 mg/l SO₄ Certipur®

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Sulfate standard solution

application(s)

environmental
food and beverages

application(s)

environmental
food and beverages

application(s)

environmental
food and beverages

application(s)

environmental
food and beverages

format

single component solution

format

single component solution

format

single component solution

format

single component solution

storage temp.

15-25°C

storage temp.

15-25°C

storage temp.

15-25°C

storage temp.

15-25°C

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

pH

7 (20 °C in H2O)

pH

6 (20 °C in H2O)

pH

7 (20 °C in H2O)

pH

-

Analysis Note

Concentration     β (NO₂⁻): 990 - 1010 mg/l
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.

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Protocols

Analytical Method: Nitrite in potato instant powder

Photometric determination using the Griess method subsequent to extraction

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