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ГлавнаяOne of the most versatile reagents; it produces distinct needles, plates, or prisms with alkaloids like Cocaine or Atropine .
The chemist observes the "zone of precipitation" under a microscope. The speed of crystal growth and the final geometric shape (e.g., rhombs, sheaves, or stars) are the primary identifiers.
The results are compared against known standards or descriptive tables, such as those found in the National Institute of Standards and Technology (NIST) databases or the original Stephenson tables. Why This Method Still Matters
