ABSTRACT
USE DIFFERENT DENSITY FACTORS WHEN APPROPRIATE Percent strength should be expressed in terms of pounds chemical per pounds solution. Therefore, when solutions are expressed in terms of gallons, the gallons should be expnssed as pounds before continuing with the percent strength calculation. It is important to consider what density factor should be used to convert from gallons to pounds. If the solution has a density the same as water, 8.34 lbs/gal would be used. If, however, the solution has a higher density, such as for some polymer solutions, then a higher density factor should be used. When the density is unknown, sometimes it is possible to weigh the chemical solution to determine its density.
