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Equipment/Supplies (4).
We use Drummond wiretrol capillary tubes. Each 100 tubes come with one plunger (with the white handle). The tubes are marked for 1-5 microliters. However, because we bake all glassware that come into contact with hemolymph or JH, the marks do not stay. We use a ruler to measure the length of blood in millimeters instead. Make sure you know 5 microliters = how many millimeters. In this case, 5 ul = 27 mm, so we know later how convert mm back to ul (1 ul = 5.4 mm).
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