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Multi-channel Fiber Optic pH Meter

pH-4 mini

The pH-4 mini is a fiber optic pH meter for simultaneous operation of up to 4 pH sensors. The matching pH sensors type HP5 & HP8 are based on a 2 mm optical fiber and optimized for physiological solutions. The pH meter is connected to a PC and controlled with a user-friendly software.

  • For use with non-invasive pH sensors & flow-through cells
  • One calibration for a multitude of sensor spots
  • Software included

Applications

Bioprocess Development: pH Monitoring in Shake Flasks

The pH is one of the major issues in the cultivation of cells, yeast or bacteria. Shake flask cultures are widely applied in academic and industrial bioprocess development. As adequate methods for real monitoring of pH were not available, cumbersome at-line sampling was used. The combination with non-invasive oxygen sensors in shake flasks provides new insights into metabolic activity and changes in metabolic pathways.


Technical

Specifications
pH sensorsHP5 / HP8
Power supply110 - 230 VAC, 50/60 Hz, max. 40 vA (cables included)
Temeprature:
operating / storage
0 °C to + 50 °C / - 10 °C to + 60 °C
Relative humidityup to 80 % (non condensing)
Dimensions300 mm x 250 mm x 135 mm
Weight3.3 kg
Digital interfaceRS232 interface (with RJ connector to serial port, cable included)

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