SCHONBEIN'S TEST
\skˈɒnbiːnz tˈɛst], \skˈɒnbiːnz tˈɛst], \s_k_ˈɒ_n_b_iː_n_z t_ˈɛ_s_t]\
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A t. for hydrocyanic acid by the blue color its presence gives to a strip of filtering paper when dipped into a 1/10 per cent, solution of copper sulphate after having been soaked in a 1 per cent, solution of tincture of guaiac resin and dried. [Christian Frederick Schonbein, German chemist, 1799-1868.]
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See Schonbein.
By Smith Ely Jelliffe
