Van London Company LogoVan London Company, your source for pH, ORP (Oxidation-Reduction Potential), Conductivity, Oxygen, and Ion Selective Electrodes, for Laboratory, Biotechnology and Medical Applications
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Van London Company
10540 Rockley Road
Houston, TX 77099

(Toll Free) 800-522-7920
(voice) 832-456-4100
(fax) 832-456-6642

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Stainless Steel Dissolved Oxygen Probes The steam sterilizable family of dissolved oxygen electrodes from the Van London Co. is specifically designed for fermentation where it is necessary to subject electrodes to repeated steam sterilization. Dissolved oxygen electrodes are available in both polarographic and galvanic styles to fulfill all requirements. Van London Co.  O2 electrodes are compatible with most common O2 amplifiers found in fermentation.
Polarographic electrodes are designed to be used with Van London Co., Ingold IL, Cole-Parmer and Applikon O2 amplifiers, or with other amplifiers that are designed to be used with Ingold dissolved oxygen electrodes.
Galvanic electrodes are designed to be used with Van London Co., New Brunswick Scientific, LSL Biolafitte and Applikon O2 amplifiers.
VLC Dissolved Oxygen probes are available for laboratory fermentation where sterilization takes place in a separate autoclave or industrial applications where sterilization takes place in-situ. The easily replaced electrode membrane cartridge is a unique feature of the Van London Co. polarographic and NBS galvanic dissolved oxygen electrodes. The membrane is of a special construction - a silicone and teflon composite, reinforced with stainless steel mesh. This unique membrane is very rugged and allows for repeated sterilization without damage, allowing it to withstand severe conditions. The electrode operates without maintenance for 5 to 10 sterilizations, fermentation cycles or, in terms of time, for 6 to 8 weeks.
The Van London Co. Biolafitte type galvanic dissolved oxygen electrode features easily replaceable FEP teflon membranes.
The polarographic dissolved oxygen electrodes are available with or without automatic temperature compensation. They are designed to match the Ingold IL oxygen amplifier. Temperature compensation is not normally required when calibration is made at the same temperature as the controlled fermentation temperature with no variation.