Cell Culture Tubes with Integrated pH Sensors

iTube pH

The iTube pH consists of a plastic tube with integrated and pre-calibrated pH sensor spots. They are read out by the SFR Shake Flask Reader or SFR vario in combination with the specially designed iTube adapters. A small plastic adapter piece on the tube bottom allows correct positioning of the tube on the SFR / SFR vario.

  • Ready-to-use
  • Pre-Calibrated
  • For microbes & cell cultures
Get a quote Place an order


* provided iTubes pH are used without further handling in physiological solutions
** at 100 rpm & with cell culture media
Measurement rangepH 5.5 - 8.0
Resolution**at pH = 7: ± 0.01 pH
Drift< 0.01 pH per day (sampling interval 1 min.)
Measurement temperature rangefrom + 5 to + 50 °C
Response time (t90)**at + 25 °C: < 60 sec.
CampatibiityAqueous solutions, ethanol (max. 10 % v/v), methanol (max. 10 % v/v), pH 2 - 10
Cross-sensitivityReduced to ionic strength (salinity); a high concentration of small fluorescent molecules in the visible range can interfere.
CalibrationiTubes are delivered irradiated
Storage stability12 months provided the sensor is stored in the dark

Related products

Multi-parameter system SFR Shake Flask Reader

SFR Shake Flask Reader

The SFR Shake Flask Reader monitors pH, oxygen and OUR in up…

Multi-parameter system SFR vario

SFR vario

The SFR vario offers online monitoring of oxygen, biomass…

iTube Adapter expanding application possibilities

iTube Adapter

The iTube adapter allows to read out sensors integrated in…

96-channel meter ITR iTube96Reader

ITR iTube96Reader

The ITR iTube96Reader is a 96-channel transmitter for…


Presens TV

Watch tutorials, webinars and informative videos about PreSens optical sensor systems.

All videos