It was constructed self-developed interface allowed continual indirect measurement of evolved carbon dioxide, by the by the utilization of conductivity probes. This continual data record reduced demands on the human operators in the ready biodegradability assessment; while the indirect measurement of produced carbon dioxide was not assessed by the titration but conductivity measurement of absorption solution - barium hydroxide. This measurement was allowed because change in conductivity of barium hydroxide was in the linear correlation to reacted carbon dioxide. For the verification of the interface operation; while the range of the method was simultaneously determined; it was tested different concentrations of standard chemical (glucose), with the different amounts of inoculum to meet the condition of typical standardized test for both the ready and inherent biodegradability (OECD 301 B and OECD 302 B).

Full text: IJEIR_1839_Final.pdf