Pipet pasteur
Pipet pasteur. He describes these techniques for his students in his laboratory manual published in 1899. The pipettes were made from lengths of standard glass tubing of about fourteen inches. The tubes were heated in the middle over a blast-lamp until soft and the two ends slowly drawn apart to form a long thin capillary.
This was then heated again at the center to completely seal and divide the tube thus forming two pipettes. The pipettes were then sterilized and cotton plugs inserted in the open end to prevent further contamination. Thus prepared, a quantity of pipettes could be kept on hand until needed during investigations.
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Gallery of Pipet pasteur
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