Patent ID: 7275416

Claim:
A volumetric densiometer flask for determining a volumetric density of a solute, the flask comprising: (a) a first bulbous portion in a lower end section of the flask; (b) a second bulbous portion in an upper end section of the flask, the second bulbous portion comprising an open mouth at an upper end of the bulbous portion; (c) a central neck comprising a central channel in open communication with the second bulbous portion at an upper end of the neck, and the first bulbous portion at an opposite, lower end of the neck; and (d) a single, removable stopper that is closely insertable into the mouth of the second bulbous portion, the mouth being correspondingly sized to a lower end of the stopper; and wherein the flask comprises a plurality of graduated markings on the neck; and wherein the following is solved to obtain the volumetric density of the solute; A/[B ( C )± D ( E )]= F where: A=mass of the solute in micrograms; B=volume of a solvent in milliliters; C=density of the solvent in grams/milliliter; D=volume of the solute in milliliters; E=volumetric density of the solute in grains/milliliter; and F=concentration of the solution in micrograms/gram; and wherein, when the flask is in use, the solute and solvent are introduced through the oven mouth into the first bulbous portion and flow through the neck into the second bulbous portion.