USP Grade就是美国药典级，符合美国药典标准的普通试剂也应该是可以这么标注的。

不是符合美国药典标准的药都可以称之为“USP grade ”。

When you buy USP grade you are assured of 3 things:

1. The product was made to the exact specifications listed in it’s USP monograph
2. The manufacturer is FDA registered and licensed and the product HAS been approved(including the labeling/marketing material) by the FDA as meeting USP specifications.
3. The product was made in a FDA certified facility using cGMP(current good manufacturing practices) which are stringent to ensure lot to lot consistency，

也就是说，标有这个标准的药至少满足三个条件：
1，它符合美国药典的要求；
2，它的制造商在FDA注册过且被授权生产该产品；
3，。。。。。。