pH sensor with Luer Lock SST-HP5-US

Non-invasive pH measurement 5.5  to 8.5

Categories: ,

Description

This Luer Lock adapter is equipped with a miniaturized pH Sensor Spot type HP5 (measurement range pH 5.5 – 8.5). A polymer optical fiber is attached to the Sensor Stick and connects it to a pH meter. This way continuous, non-invasive pH measurements can be performed. The pH Sensor Stick can easily be integrated in customer specific flow-through cells or experimental set-ups via Luer connectors. The SST-HP5-US is independent of flow velocity or electromagnetic fields and due to its small size it can be implemented in many set-ups where other pH measurement equipment simply does not fit.

Measurement range pH 5.5 – 8.5
Resolution at pH = 7: ± 0.02 pH
Accuracy** at pH = 7: ± 0.05 pH
Drift at pH = 7: < 0.005 pH per day (sampling interval of 1 min.)
Measurement temperature range From + 5 °C to + 50 °C
Response time (t90)*** < 120 sec.
Properties
Compatibility Aqueous solutions, ethanol (max. 10 % v/v), methanol (max. 10 % v/v), pH 2 – 10
Cross sensitivity Reduced to ionic strength (salinity); a high concentration of small fluorescent molecules in the visible range can interfere
Sterilization procedures**** Irradiation, Ethylene oxide (EtO)
Calibration SSTs are pre-calibrated; single-point adjustment is recommended
Storage stability 18 months provided the sensor is stored in the dark

*provided the pH Sensor Stick is used without further handling in physiological solution
**after single-point calibration at pH = 7
***equilibrated Sensor Stick with physiological solution and sufficient flow rate (min. 15 mL/min) at 37 °C)
****recalibration may be required