Eosine a Substitute for Litmus.

Practical Magazine 13, 1876

(Chemistry applied to the Arts, Manufactures, &c. Dyeing, Calico Printing, Bleaching, Tanning, and Allied Subjects.)

MEISTER recommends the brilliant new dye, eosine (see “Practical Magazine,” August, 1875), as a substitute for litmus in testing for alkali. Eosine changes instantaneously when exposed to the slightest alkaline action, whereas the change of colour in litmus is progressive.

- Moniteur Indust. Belge, 1st Mov. 1875.