| 摘要 |
FIELD: measurement technology.SUBSTANCE: invention can be used as an analytical element in devices, used for measurement of ion in various liquid samples. According to the invention the flow-through multi-sensor potentiometric cell for the analysis of small liquid sample volumes is offered, which contains a housing from polymeric material, represented by line-arranged ion-selective sensors (at least two). Each sensor has a sensing device implemented as a sensor membrane from PVC and plastifier with ionophores, and has a conductor for connecting to the measuring device. It also contains a reference electrode and a vessel for the analysed samples. The distance between sensing devices is 2 mm minimum. The housing is designed tubular from PVC, and the joint of ion selective sensors is made seamless.EFFECT: device allows to measure reliably the ion concentrations in small volumes of samples, 50-200 µl, it can be used for the analysis of medical and biological samples, and characterised by long periods of service and storage.7 dwg, 7 ex |
