DIN 38412-13 : 1983 Title: German standard methods for the examination of water, waste water and sludge; test methods using water organisms (group L); determination of oxygen production and oxygen consumption in an aquatic environment (SPG and SVG) by means of the light and dark bottle method (L 13) (determination of biogenic aeration rate) Year: 1983 Publisher: DIN Media GmbH Availability: Within 1-2 working days