Dri-Ref™ Reference Electrodes

The WPI's Dri-Ref reference electrodes provide extremely low electrolyte leakage (KCl) and exhibit stable and reproducible potential and low resistance.

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WPI created the Dri-Ref™ reference electrodes with extraordinarily low electrolyte leakage characteristics. In addition to this important property these electrodes also have low resistance and a consistent, repeatable voltage. When not in use, they can be kept in KCl and have a long lifespan.

Although the internal filling solution contains KCI, Dri-Ref can be used with ion selective electrodes, such as those for K+ and Cl-, without significantly contaminating the reference electrode due to its low fluid leakage.

Strong acids and alkalines won't chemically harm Dri-Ref electrodes. The use of Dri-Ref electrodes in organic solvents is not recommended. Additionally, the long, thin FLEXREF can be simply managed to fit a challenging experimental setting.

	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

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Dri-Ref™ Reference Electrodes

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