VWR作为全球科学技术服务的领导者，长期致力于在制药、生物技术、工业、教育、政府和医疗保健领域为实验室和量产客户提供优质产品、服务和解决方案。2017年Avantor成功并购了VWR。
vwr中国官方磷酸盐标准液,500ml VWR目录号：HACH256949
Phosphate standard solutions
Standard solution for accuracy checks in phosphate (phosphorus) determinations.
| 说明 | 浓度 | 包装规格 | VWR目录号 |
| Phosphate standard solution, 500 ml (NIST) | 1 mg/l as PO43- | 500 ml | HACH256949 |
| Phosphate standard solution, 946 ml (NIST) | 3 mg/l as PO43- | 946 ml | HACH2059716 |
| Phosphate standard solution, 946 ml (NIST) | 10 mg/l as PO4 | 946 ml | HACH1420416 |
| Phosphate standard solution, 500 ml (NIST) | 50 mg/l as PO4 | 500 ml | HACH17149 |
| Phosphate standard solution, 100 ml (NIST) | 100 mg/l as PO4 | 100 ml | HACH1436832 |
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