Where substances can only be described by their manufacturing method, the description shall be sufficiently detailed to characterise a substance which is constant both on its composition and in its effects;
I gcás nach féidir cur sios ar shubstaintí ach amháin de réir a modhanna monaraíochta, beidh an cur síos sin mionsonraithe a dhóthain chun a léiriú faoin tsubstaint go bhfuil sí tairiseach a dóthain ina comhdhéanamh agus ina héifeachtaí;