[Detection of niacin with the paper strip test (author's transl)]

Preparation and application of reagent impregnated paper strips for the detection of niacin are described. 170 cultures of mycobacteria were tested with the paper strips and by the conventional aniline-cyanogen bromide method. The results obtained demonstrate a high degree of correlation. Because of its advantages in comparison to the aniline-cyanogen bromide method-the toxic cyanogen bromide is omitted; malachite green does not disturb the reaction-the paper strip test can be recommended without reservation for the detection of niacin in microbiological laboratories.