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.
Okay...here is the proper way to do it... calculation is as follows; 0.2 to 0.5 x cm2. This means that for a T25cm2 flask the volume range is 5-12.5mls for optimal CO2 penetration. T75cm2 flask = 15-37.5mls. T150cm2 flask = 30-75mls. T185cm2 flask = 37-92.5mls. calculation is done by multiplying 25 (for a T25cm2 flask) x 0.2 = 5ml lowest volume. 25 x 0.5 = 12.5ml highest volume. 75 x 0.2 = 15ml lowest volume. 75 x 0.5 = 37.5ml highest volume and so on. The measurements are gotten by measuring the base of the flask (or bottom). T75cm2 flasks are about 8cm x 9cm. You can even stand the flask up and use it that way. For a T75cm2 flask the bottom measures about 7.5cm x 3cm = 22.5cm2 = 4.5 to 11.2 ml volume.