Merck 119899 0500 Nitrite Standard Solution Traceable To Srm From Nist Nano2 in H2O 1000 Mg/L No2

Merck 119899 0500 Nitrite Standard Solution Traceable To Srm From Nist Nano2 in H2O 1000 Mg/L No2

Merck 119899 0500 Nitrite Standard Solution Traceable To Srm From Nist Nano2 in H2O 1000 Mg/L No2

52,25€ ( KDV Dahil )

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

Stok kodu: 119899.0500 Kategoriler: , ,

Açıklama

Description
Catalogue Number 119899
Synonyms Nitrite standard for aqueous matrices ready foruse

Product Information
HS Code 2834 10 00
Quality Level MQ100

Physicochemical Information
Density 1.001 g/cm3 (20 °C)
pH value 7 (H₂O, 20 °C)

Safety Information according to GHS
Storage class 10 – 13 Other liquids and solids
WGK WGK 2 obviously hazardous to water
Disposal 28
Aqueous solutions: Container D.

Storage and Shipping Information
Storage Store at +15°C to +25°C.

Specifications
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.

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