PROCESS AND APPARATUS FOR THE DETERMINATION OF TOXICITY OF NATURAL WATERS, SEWAGE AND OTHER WATER SOLUTIONS

摘要

Detection of toxicity of surface and waste waters and other aq. solns. is based on the measurement of the biological oxygen demand of microorganisms. Microorganisms are immobilised on a filter membrane and the respiration intensity of the microorganisms contg, membrane is determined. - This biological cative ''sandwiched'' membrane to complete with an oxygen electrode and the measuring device also contains a nutrient unit and a registering universal titrator.