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The following simple method is submitted with the hope that it may be of service to others doing blood work, as it has been to me.
Thoroughly cleansing the capillary pipettes after use is a very important feature in blood work. The usual method of blowing through a rubber tube is very trying to the buccal muscles. The use of an ordinary camera bulb, rubber being more pliable and durable, solved the problem. Expulsion of the contents, cleaning and suction of the ethereal vapor by this means is much easier, quicker and more thorough. The bulb must fit the tube (pipette) snugly. Usually rubber tubing is connected with the camera bulb. This must be removed, using merely the bulb.
I have found this method very convenient, particularly in the expulsion of the contents from
BENMOSCHE M. METHOD OF CLEANSING BLOOD PIPETTES.. JAMA. 1906;XLVII(21):1738. doi:10.1001/jama.1906.25210210046002d