Description

Catalogue Number

119811

Synonyms

Nitrate standard for aqueous matrices ready for use

Product Information

HS Code

2834 29 80

Quality Level

MQ100

Physicochemical Information

Density

1.00 g/cm3 (20 °C)

pH value

6 (H₂O, 20 °C)

Safety Information according to GHS

Storage class

10 - 13 Other liquids and solids

WGK

NWG not water endangering

Storage and Shipping Information

Storage

Store at +15°C to +25°C.

Specifications

Concentration β (NO₃⁻)

990 - 1010 mg/l

Determination method: Alkalimetric titration.

The content of this solution was determined with sodium hydroxid standard solution 0.1 mol/l .The sodium hydroxide standard solution 0.1 mol/l is adjusted by hydrochloric acid standard solution 0.1 mol/L.The hydrochloric acid standard solution is standardized and traceable to volumetric standard tris(hydroxymethyl)aminomethane (article number 1.02408). The expanded measurement uncertainty is ± 1 % (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 723 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard tris(hydroxymethyl)aminomethane, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.