Dri-Ref Reference Electrode, 4.7 mm
Low electrolyte leakage, stable potential with low resistance
- 4.7 mm diameter
- Extremely low electrolyte leakage
- Stable, reproducible potential with low resistance
- Chemically resistant to strong acids and bases
- May be used with ion selective electrodes without contamination from the reference electrode
- Small volume, low salt concentration measurement (SDR)
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.
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.
|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|
|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|
J.S. Erlichman, J.C. Leiter "Identification of CO2 chemorecptors in Helix pomatia" American Zoologist 37. 1997: 54-64