1.19898

Phosphate standard solution

traceable to SRM from NIST KH₂PO₄ in H₂O 1000 mg/l PO₄ Certipur^®

• Synonym(s): Phosphate standard for aqueous matrices ready for use

Properties

• Quality Level: 100
• technique(s): ion chromatography: suitable
• density: 0.998 g/cm³ at 20 °C
• application(s): environmental; food and beverages
• format: single component solution
• storage temp.: 15-25°C

Description

Packaging

500 , 500 ml

Analysis Note

Concentration     β (PO₄³⁻): 990 - 1010 mg/l
Determination method: Alkalimetric titration.
The content of this solution was determined with sodium hydoxide standard solution (article number 1.09141) standardized against volumetric standard potassium hydrogen phthalate (article number 1.02400). 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 84L (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard potassium hydrogen phthalate, 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

Safety Information

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: nwg