DIN 38412-33 : 1991 Title: German standard methods for the examination of water, waste water and sludge; bio-assays (group L); determining the tolerance of green algae to the toxicity of waste water (Scenedesmus chlorophyll fluorescence test) by way of dilution series (L 33) Year: 1991 Publisher: DIN Media GmbH Availability: Within 1-2 working days