D701 Polarographic O2 Electrode Probe
The D701 polarographic oxygen electrode Probe is designed for laboratory use to provide fast, accurate, stable readings with easy maintenance.
The D701 is a polarographic O2 electrode Probe (identical in design to the E-5046 electrode from Radiometer) consisting of a combined platinum- and silver/silver chloride electrode mounted in an electrode jacket and covered by a 20 um thick membrane of polypropylene. A reservoir of phosphate buffer and potassium chloride is trapped inside the electrode.
When a polarizing voltage of approximately 630 mV is applied to the platinum cathode, a current proportional to PO2 will be generated by reduction of the oxygen diffusing towards the cathode.
Included supplies:
- Electrode body & O-ring
- Oxygen membranes (15/pkg)
- Membrane O-ring (10/pkg)
- Membrane mounting tool
- Oxygen internal fill solution (electrolyte) (60 mL)
- Rubber end cap
Required supplies (not included):
- D607 Polarographic amplifier
- Nitrogen gas or sodium sulfite (Na2SO3)
- Distilled water, alcohol and lab wipes
Specifications:
| Range | 0 – 800 mm Hg |
| Response Time | 30 – 60 sec. at 37oC (99% response) |
| Oxygen Sensitivity | 10-11 A / mm Hg PO2 (approx.) |
| Zero Current | Less than 3 x 10-10 A at 37oC |
| Accuracy | Approx. 1% |
| Temperature Range | 20 – 50oC |
| Temperature Coefficient | Approx. 3% / oC when equipped with a 20 um polypropylene membrane |
| Reference Electrode | Silver/silver chloride |
| Membrane Material | Polypropylene, thickness 20 um |
| Electrode Solution | Phosphate buffer – potassium chloride |
| Plug type | BNC UG-88/u |
| Cable Length | 1 m |
| Electrolyte Reservoir | Approx 0.8 mL |
