纯度检验证明

例句：

1. 1. The water is of high purity, suitable for drinking.
   水是高纯度的，适合饮用。
2. 2. The food was so pure that it tasted like nature.
   食物如此纯净，尝起来就像自然的味道。
3. 3. The company's product has a high purity, ensuring the quality of life.
   公司的产品纯度高，保证了生活质量。