Each package of pesticide shall show the net weight or measure of content, either stenciled or printed on the package or container, or on a tag attached thereto. Indefinite statements of content such as ".... oz. when packed" shall not be used. Statements of liquid measure, or of specific gravity or density of liquid preparations, or expression of Cornposition in terms of pounds per gallon shall be made on the basis of 68°F. (20°C.) except when other basis has been established through trade custom.
Iowa Admin. Code r. 21-45.14