Ortolang: "titre" (in French): "4. a) 1543 tiltre « proportion d'or ou d'argent dans les monnaies, dans les ouvrages d'or et d'argent » " (tiltre: proportion of gold or silver in monies, in works of gold or silver)
doi.org
Christophe, R. (1971). "L'analyse volumétrique de 1790 à 1860. Caractéristiques et importance industrielle. Evolution des instruments" [Volumetric analysis from 1790–1860. Characteristics and industrial importance. Evolution of instruments.]. Revue d'histoire des sciences (in French). 24 (1): 25–44. doi:10.3406/rhs.1971.3172. From p. 38: " ... il préfigure bien ses descendants actuelles ... " ( ... it [i.e., Henry's burette] foreshadows well its modern descendants ... )
DeMore, W.B.; M. Patapoff (September 1976). "Comparison of Ozone Determinations by Ultraviolet Photometry and Gas-Phase Titration". Environmental Science & Technology. 10 (9): 897–899. Bibcode:1976EnST...10..897D. doi:10.1021/es60120a012.
hathitrust.org
babel.hathitrust.org
Gay-Lussac (1828). "Essai des potasses du commerce" [Assays of commercial potash]. Annales de Chimie et de Physique. 2nd series (in French). 39: 337–368. In footnote (1) of p. 340, Gay-Lussac first uses titre as a verb: "Il leur serait plus facile de titrer l'acide sulfurique normal au moyen du carbonate de soude ou de potasse pur; ... " ([In determining the concentration of sulfuric acid] it would be easier for them to titrate normal sulfuric acid by means of pure sodium or potassium carbonate; ... )
Gay-Lussac (1824). "Instruction sur l'essai du chlorure de chaux" [Instructions on the assaying of chlorinated lime]. Annales de chimie et de physique. 2nd series (in French). 26: 162–175. On pp. 170–171, Gay-Lussac describes various figures that appear in a plate (illustration) that accompanies the article. From p. 170: " F, petite mesure ou pipette de 2+1/2 centimètres cubes, ... " ( F, small measure or "pipette" of 2+1/2 cc., ... ) From p. 171: " I, burette destinée à mesurer la teinture d'épreuve: ... " ( I, "burette" intended to measure the test dye: ... )
Mohr, Karl Friedrich (1855). Lehrbuch der chemisch-analytischen Titrirmethode ... , part 1 [Textbook of analytical chemistry titration methods ...] (in German). Braunschweig, (Germany): Friederich Vieweg und Sohn. pp. 2–20. Page 3 shows Mohr's burette; page 12 shows a burette with a glass stopcock (Glasshahn).
