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| Description |
|---|
| Catalogue Number | 119813 |
| Synonyms | Sulfate standard for aqueous matrices ready for use |
| Product Information |
|---|
| HS Code | 2833 11 10 |
| 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 | 28Aqueous 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. |
