Dri-Ref Reference Electrode, 2 mm
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
- 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-2 |
|---|
| 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 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.T. van Dongen, R. G.W. Laan, M. Wouterlood, A.C. Borstlap "Electrodiffusional Uptake of Organic Cations by Pea Seed Coats. Further Evidence for Poorly Selective Pores in the Plasma Membrane of Seed Coat Parenchyma Cells" Plant Physiology 126. 2001: 1688-1697
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Flexible Dri-Ref Reference Electrode
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