54.9 MB (55.0 MB compressed)
4981 x 3853 pixels
42.2 x 32.5 cm ⏐ 16.6 x 12.8 in (300dpi)
SIMON FRASER / SEARLE PHARMACEUTICALS / SCIENCE PHOTO LIBRARY SIMON FRASER / SEARLE PHARMACEUTICALS / SCIENCE PHOTO LIBRARY
Laboratory bench analysis in the quality control stages of the manufacture of pharmaceuticals. Here, the technician is using a glass pipette to transfer a measured volume of liquid into a flask in the preparation of a standard solution, that is, a solution of accurately-determined concentration. The pipette is filled and emptied using the rubber bulb, a device originally introduced to discourage the dangerous practice of pipetting by mouth.
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