更多phenolphthalein例句

1. It is undoubtedly true, however, as we have previously stated, that phenolphthalein is worthy of a trial.
2. The first page mentioned discusses the introduction of phenolphthalein into medicine.
3. Then boil for two minutes, neutralize exactly with dilute acetic acid (use phenolphthalein as the indicator).
4. Mould growth, on the other hand, is most vigourous in media that are strongly acid to phenolphthalein.
5. Litmus is insensitive to many weak organic acids the presence of which is readily indicated by phenolphthalein.