Laboratory technician pouring liquid into a test tube, c 1940s.

Crookes tube, c 1888.

Kephaldol tablets.

Crookes Maltese cross tube, 1879-1888.

Crookes' mill-wheel tube, 1879-1888.

Crookes tube, c 1888.

Two small glass-plate x-ray negatives;the first to be made in Sir William Crookes laboratory

A selection of electric heaters for laboratory use, c 1920s.

Chemical apparatus, late 19th century.

Bras bunsen burner, c 1865. The Bunsen bur

Testing penicillin solutions in a laboratory, 1943.

Solid-state rectifier from the Philips Million-Volt Accelerator, 1937.