Graduated cylinders are marked off in volume units Larger units are indicated (e.g., 10 ml, 20 ml, 50 ml, etc.) Smaller units are not marked but are indicated You must pay attention to these smaller, unmarked units to get an accurate reading for volume Due to capillary attraction, a liquid in a graduated cylinder will not form a flat surface. Instead, it curves up the sides forming a dip or meniscus. By convention, we always read the volume of the liquid from the bottom of the meniscus (Figure 1.4)
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