The pH of the buffer can be important when using carboxylate-modified or
amine-modified microspheres. The carboxylate-modified microspheres should be
used at a pH greater than about 5.0, while the amine-modified microspheres
require a pH of less than about 9.0.
如果是前者，是只能用pH稍稍大于5的，还是说只要大于5都可以呢？
谢谢～
