Hellige(?) haemoglobinometer, plated steel and glass, made in Germany, 1890-1930 Haemaglobinometer; Germany 1890-1930
Glass bottle which contains a test-tube full of ammonium tartrate crystals prepared by fermentation of the racemate, prepared by Pasteur, used in his experiments on fermentation, circa 1857 Glass bottle which contains a test-tube full of ammonium tartrate crystals prepared by fermentation of the racemate 1855-1860
Sahli(?) haemaglobinometer set in leatherette case, supplied by C. Baker, London, English, 1891-1930 Sahli(?) haemaglobinometer set in leatherette case