Specifies a method for the determination of the bound styrene content of styrene-butadiene rubber (SBR) latices. Applicable to hot emulsion polymerized SBR latices having a bound styrene content of up to 55 % and to cold emulsion polymerized SBR latices having a bound styrene content between 18 and 40 %. This second edition cancels and replaces the first edition (1975).