Description

Catalogue Number

119813

Synonyms

Sulfate standard for aqueous matrices ready for use

Product Information

HS Code

2833 11 00

Quality Level

MQ100

Physicochemical Information

Density

0.998 g/cm3 (20 °C)

Safety Information according to GHS

Storage class

10 - 13 Other liquids and solids

WGK

NWG not water endangering

Disposal

28

Aqueous solutions: Container D.

Storage and Shipping Information

Storage

Store at +15°C to +25°C.

Specifications

Concentration β (SO₄²⁻)

990 - 1010 mg/l

Determination method: Titration with lead(II)perchlorate solution.

The content of this solution was determined with lead(II)perchlorate solution standardized against volumetric standard zinc (article number 1.02409). 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 682 (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard zinc, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025.