LITMUS PAPER
\lˈɪtməs pˈe͡ɪpə], \lˈɪtməs pˈeɪpə], \l_ˈɪ_t_m_ə_s p_ˈeɪ_p_ə]\
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A test paper for acids (blue l. paper, charta exploratoria coerulea, prepared by staining unsized paper with a strong, clear infusion of l. (1 part of l. to 4 of water). If a test for alkalis is required, the infusion is first reddened by an acid, forming red l. paper. [Lat.]
By Smith Ely Jelliffe
