Nitrosamines are formed from the chemical reaction between amines and nitrogen containing products that include nitrides, nitrogen oxides or nitrous acids. The products are present extensively in the environment and in the alimentary tract of humans and mammals. These products are now classified as known carcinogens. The products may only be present in various matrices in parts per billion (ppb) or parts per trillion (ppt) levels, so a high degree of sensitivity and high-quality standards are necessary to detect their presence. Reagecon offers ready-to-use, neat (powder form) and multi element standards for nitrosamine analysis.