The purpose of this paper is to apply results on weighing designs to the setting of 2 m factorial designs. Using weighing designs, we give some proposals for experimental plans. Relevant counterexamples are indicated. Also the results of a simulation study on the existence of weighing designs are presented.Key words: chemical balance weighing design, factorial design, spring balance weighing design. We now apply Theorem 3.4 (ii) for 3 0 x . We obtain