I read today that the FAA has extended the timeline in which it will be inspecting all charter operations specifications section A008 for compliance with operational control requirements.
We have three sizes of volumetric flasks to choose from: 100, 250 and 500 milliliters and they feature a single etched line or graduation to denote the fill-to-line at the chosen volume. Each size flask is specifically made for preparing solutions that correspond to its nominal value. For example, a 250 ml volumetric flask is the appropriate choice only when preparing a solution with a total volume of 250 ml.
Flasks and beakers are typically used to hold liquids. The indicated measurements are designed to be approximate with a margin of error. The markings or calibrations on a graduated cylinder are more precise and accurate, but should not be used if the cylinder is less than 50 percent full.