Chromate Standard Solution 500ml
traceable to SRM of NIST K₂CrO₄ in H₂O 1000 mg/l CrO₄ Certipur®
Manufacturer: Merck
Catalog ID: 119780.0500
Stock: In Stock
Description
| Catalogue Number | 119780 |
| Synonyms | Chromate standard for aqueous matrices ready foruse, Nota 1 A |
Product Information
| HS Code | 2841 50 00 |
Physicochemical Information
| Density | 1.0 g/cm3 (20 °C) |
| pH value | 7 (H₂O, 20 °C) |
Storage and Shipping Information
| Storage | Store at +15°C to +25°C. |
Specifications
| Concentration β (CrO₄²⁻) | 990 - 1010 mg/l |
| Determination method: Iodometric titration. The content of this solution was determined with sodium thiosulfate standard solution (article number 1.09147) standardized against volumetric standard potassium iodate (article number 1.02404). 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 136f (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard potassium iodate, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025. |
