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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ARTICLE Stephanie Matheson. An average loft room conversion / second storey addition in New Zealand will cost approximately $200,000 to $450,000+. These days many people are deciding to stay in their homes and maximise the space they've got.Here is how you can make the most of your loft while keeping renovation costs down.n average loft room conversion / second storey addition in New Zealand will cost approximately $200,000 to $450,000+.