Cuprum oxydatum nigrum

Cuprum oxydatum nigrum Varma P. N., Indu V., Encyclopedia of Homoeopathic Pharmacopoeia Description: Black, fine powder, soluble in dilute acids, practically insoluble in water and in alcohol. Contains not less than 97.0 per cent of CuO calculated with reference to the substance dried to constant weight at 105oC. Identification: Yields reactions characteristic of copper. Preparation: … Read more