Process for measuring the photometric chemical oxygen requirement of liquid samples comprises using several cuvettes in a holder located or inserted in a dosing device

摘要: Process comprises several cuvettes which are placed in a holder is located or inserted dosing device so that the filled with liquid samples using hollow needle (12) by relative movement between it and before photometric measurement carried out. for measuring chemical oxygen requirement of (29) placing sample cuvette containing reagent, closing cuvette, investigating contents its photometer, optionally after mixing thermal treatment. Several An independent claim also included comprising an upper-side opening lid (24) opening, having wall (25) (26) covered membrane (27).