Dri-Ref Reference Electrode, Short
Low electrolyte leakage, stable potential with low resistance
Dri-Ref™ reference electrodes were developed by WPI to have extremely low electrolyte leakage properties, hence the name “Dri-Ref.” In addition to this key feature, these electrodes exhibit stable and reproducible potential and low resistance. Stored in KCl when not in use, they have a long life expectancy.
Features
- 2 mm diameter (short)
- Extremely low electrolyte leakage
- Stable, reproducible potential with low resistance
- Chemically resistant to strong acids and bases
Benefits
- May be used with ion selective electrodes without contamination from the reference electrode
Applications
- Small volume, low salt concentration measurement (SDR)
May be used with ion selective electrodes
Although the internal filling solution contains KCI, the low fluid leakage means Dri-Ref may be used in combination with ion selective electrodes, including those for K+ and Cl-, without significant contamination from the reference electrode.
The Dri-Ref electrodes are chemically resistant to strong acids and alkalines. Dri-Ref electrodes are not suitable for use in organic solvents. In addition, the long, thin FLEXREF may be easily manipulated to accommodate a difficult experimental setup.
SUPER-Dri-Ref – With a diameter of 2mm, SUPER-Dri-Ref does not leak electrolyte at all. Exhibiting the electrical stability of a classic flowing junction reference cell, this electrode exhibits low resistance and a stable half-cell potential essentially independent of sample electrolyte concentration. SUPER-Dri-Ref is ideal for small volume and low salt concentration measurements.
Micro-Reference Electrode – Only 450 µm in diameter and one inch long, the new DRIREF-450 reference electrode can be used along with other sensors in space-restricted areas and very small sample volumes.
Luer-Tip Reference – The male luer fitting at the front of the DRIREF-L allows it to be easily connected to a female luer port.
| SKU | DRIREF-2SH |
|---|
| DRIREF-450 | DRIREF-5 | DRIREF-2 | FLEXREF | SDR | DRIREF-L | DRIREF-5SH | DRIREF-2SH | |
| LENGTH | 2.54 cm | 9 cm | 13 cm | 13 cm | 9 cm | 7.5 cm | 3.5 cm | 2.54 cm |
| DIAMETER | 450 µm | 4.7 mm | 2 mm | 1.5 mm | 2 mm | Standard Luer | 4.7 mm | 2 mm |
| CONSTRUCTION | Coated Glass | Epoxy | Isoplast™ | Teflon™ | PVC | Polypropylene | Epoxy | Isoplast™ |
| RESISTANCE (TYPICAL) | < 5 K Ω | ~500 Ω | ~2.7 KΩ | ~2.7 KΩ | < 5 KΩ | ~500 Ω | ~500 Ω | ~2.7 KΩ |
| ELECTROLYTE LEAKAGE (ML/HR) | — | ~7.4×10⁻⁷ | ~5.7×10⁻⁸ | ~5.7×10⁻⁸ | — | 7.4×10⁻⁷ | ~7.4×10⁻⁷ | ~5.7×10⁻⁸ |
| LEAD LENGTH | 30 in. (76 cm) | |||||||
| CONNECTOR | 2 mm pin | |||||||
| Filling Solution | KCl | |||||||
J.S. Erlichman, J.C. Leiter "Identification of CO2 chemorecptors in Helix pomatia" American Zoologist 37. 1997: 54-64
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Flexible Dri-Ref Reference Electrode
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