To test for other substances another 10 mg of the heroin mixture were dissolved in ethanol (1.0 ml) and 10 &mu;
(another 10 mg of the heroin mixture; were dissolved; T:in ethanol (1.0 ml) and 10 &mu)
another 10 mg of the heroin mixture
were dissolved
T:in ethanol (1.0 ml) and 10 &mu