In a concentration of 1 per cent the ammonium salts of weak acids react positively with ninhydrin. by on March 14, 2009 www.jbc.orgDownloaded from. V. J. Harding and F. H. S. Warneford 335 3. In very high concentration the ammonium salts of the strong mineral acids give a positive ninhydrin reaction.
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âThere was a rough patch during Lutherâs early and mid-teens when he and his dad didnât get along at all,â said Pletcher, speaking from the $600-a-month ground-level condominium she shares with her son and live-in boyfriend.