Zellner's paper

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Description

An indicating paper that is sensitive to ammonia and other alkaline materials. Zellner's paper is prepared in two steps. First it is dyed black with a substantive dye. Second it is soaked in a solution of soluble fluorescein (see Fluorescein sodium). The dried strips detect alkalis and ammonia at the part per million level.

Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4195

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