Specifications

Redox FermProbes
®
Fits all suitable FermProbe housings
Works with standard FermProbe cables
Compatible with pH transmitters that have a millivolt
display mode.
Reasons to Measure Redox
in Fermentation Media
The metabolic activity of microorganisms depends on
many factors, including the redox potential of the culture
environment. Measuring the redox potential allows the
vessel operator to monitor the addition of reducing agents
while ensuring that the potential is in the proper range for
initiation of growth. It is also important to monitor the
redox potential just before inoculation.
ANAEROBIC FERMENTATION
Redox sensors are most commonly u sed to maintain
anaerobic conditions in a culture media. They can be used
to measure trace amounts (<1 ppm) of dissolved oxygen,
at levels that are too low for D.O. sensors.
DOWNSTREAM PROCESSING
Sometimes used in steps performed downstream of the fermen-
tation process, redox sensors can monitor changes in concentra-
tion or the absence or pres ence of specific chemicals.
Monitoring the redox potential is an effective way of track-
ing chemical conversions in the process.
PROTEIN FOLDING
The close regulation of redox potential is crucial to allow efficient
formation of disulfide bonds, which facilitate folding and the sta-
bility of the folded protein. Overly oxidizing conditions can result
in misfolding due to the formation of incorrect bonds.
METABOLIC PATHWAYS
Measuring the redox potential is an effective way to deter-
mine its influence on the metabolic pathways of microorganisms.
This is useful for substrate utilization or the production of specif-
ic metabolites.
32
Redox Electrodes
Specifications:
• ± 5000 mV range
• Steam sterilizable to 135°C
• 150 psig maximum pressure
• Double junction, Ag-AgCl reference system
• Metric Pg13.5 threaded disconnect cap
rodes Redox Electrodes Redox Electrodes Redox Electrodes Redo
F-915 Redox FermProbe
with T-Pull
®
Cap
pH
Electrode
Redox
Electrode
Redox sensitive
Pt band
pH sensitive
glass bulb
Broadley-James Corporation (U.S. & Canada) Toll-Free: 800-288-2833 E-mail: [e-mail]
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