Beitr�ge zur Nephelometrie

Notes on the Technique of Measuring the Growth of Bacteria With a Nephelometer

“…Control cultures may be used if one is running a series of experiments, but unless the control itself is standardized, the results obtained will be purely relative, i.e., percent increase or decrease compared with the control. The use of ground glass has been suggested by Kleinmann (1925). Instead of using bacterial cultures as standards, turbid chemical suspensions have been found satisfactory (Hockenyos, 1928;McFarland, 1907).…”

Notes on the Technique of Measuring the Growth of Bacteria with a Nephelometer

“…Instead of using bacterial cultures as standards, turbid chemical suspensions have been found satisfactory (Hockenyos, 1928;McFarland, 1907). The use of ground glass has been suggested by Kleinmann (1925). The writer used control cultures as standards.…”