. measurement. On the other hand, the cost of preparing the fluid and/ or the flow may sometimes outweigh the value of the flow meas-urement, and less accuracy should be accepted.HISTORY OF FLOW. discussion of conver-sion to volumes, conversion of the volumes to billing numbers, and the audit procedures required to allow both parties to agree to the final meas-urement and money exchange.Emphasis. water-sealed; in the winter, ethanol had to be added to the water to prevent freezing. One of the immediate problems was that not all the ethanol made it into the waterbaths and some service...