Figure 1: Portable analytical devices (above) for the ChL registration where 1, 2 – electronic block and reactor box, respectively. Optrode based biosensor (bellow), where: 1 – fiber optics with immobilized cells, 2 – photodiod, 3 – system for signal registration, 4 –computer, 5 – glass container, 6 – sample, 7 – syringe for reagent introducing, 8 – pressure compensator, 9 – support.