Oxygen

Dissolved Oxygen Meter

This robust Oxygen meter measures PO2 in either liquids or gases.

• Robust 2mm stainless steel electrodes
• Electrodes have replaceable membranes
• Meter is battery operated with large LCD display
• Analog output for recorder or data acquisition

Ruthenium Fluorescence Measurement

The FO₂ton Ruthenium Fluorescence Measurement system measures oxygen in solution or in air, using a fibre optic probe. The probe tip is coated with a thin film of an organic ruthenium based dye, the fluorescence of which is quenched in the presence of oxygen.

• Does not consume oxygen, allowing continuous contact with small samples
• Variety of sensor sizes available
• Small size & 12 VDC power - easily portable or used in field
• Includes RS-232 interface and Windows-compatible software

Phosphorescence Oxygen Measurement

The PMOD-1000 and PMOD-2000 systems measure oxygen by the quenching of phosphorescence from phosphors that have been injected into the blood stream. A range of suitable phosphors is available for both surface and deeper tissue measurements.

• Two excitation wavelengths built-in (524 nm and 635 nm standard)
• Probe tip is non-invasive
• Allows in-vitro measurement from sealed chamber
• Windows-compatible software included
• Extensive method reference list available

Dual Chamber Oxygen Measurement System

The Dual Chamber Oxygen Measuring System is a complete, flexible system designed for oxygen measurement in small biological liquid samples.

• Sample sizes as small as 600 L
• Ideal for biological applications
• Flow Cell Mode: For in-line measurement of oxygen in solutions flowing past the electrode, comparing inflow and outflow
• Batch Cell Mode: For measuring oxygen consumption in a sealed 600 L sample
• Meter, electrodes and stirrer available separately (as below)

Oxygen Electrodes

A polarographic Clark-type electrode for measuring dissolved oxygen in small fixed volumes or in flowing samples.

• Electrode length of 41 mm
• Electrode diameter of 3.2 mm
• Platinum wire cathode (0.1 mm exposed section) in fused glass seal
• Typical current at ambient pO2 is 18 nA
• Temperature coefficient is 4%/1C
• Time constant with PE membrane is approx. 4 seconds
• SMC type coaxial connector

Dual Channel Oxygen Amplifier

This amplifier generates a potential that can operate our standard Clark oxygen electrodes and also converts the nanoamp electrode current into a voltage to measure pO2.

• Designed for standard Clark oxygen electrodes
• Both supplies the required biasing potential and measures the nanoampere currents generated
• Converts nanoamp current into pO2 dependent voltage