Glass 'test' tube, with a rubber pipe fitting at one end, from Dennstedt's electric combustion furnace
7 glass test tubes, from the portable laboratory owned by Dr. H.G Butterfield, by Monax, Scotland, 1930-1940 7 glass test tubes 1930-1940
Test tubes with original hand-written labels containing the first chemicals isolated from the human brain, prepared by J. L. W. Thudichum, St Thomas's Hospital, London, 1865-71. Choline platinochloride; lecithin cadmium chloride; phrenosine; kerasine; in perspex display case Test tubes containing chemicals isolated from the human brain, London, England, 1865-1871 1865-1871
Corked test tube containing sodium nitroprusside, from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 Corked test tube containing sodium nitroprusside 1930-1940
Corked test tube containing potassium oxalate, from the portable laboratory owned by Dr. H.G Butterfield, unsigned, 1930-1940 Corked test tube containing potassium oxalate 1930-1940
Two test tubes with red stoppers containing liquid in a sealed Steriking® Wipak with the words written “Embryo culture medium made 2/10/17” and one test tube with a red stopper, containing liquid from Simplified Culture System prototype developed by Jonathan Van Blerkom, University of Colorado Boulder, United States Test tube preparations for Simplified Culture System 2017