RRDE-3A

Rotating Ring Disk Electrode Apparatus

RRDE-3A Rotating Ring Disk Electrode Apparatus

RRDE-3A is a miniature rotator system for use in constant rotation and hydrodynamic techniques by rotating ring disk electrode in electrochemistry field. A short stainless steel shaft and 12 mm diameter electrode provide a concentric circle electrode system that is capable of high accuracy.

RRDE-3A is electronically controlled by a proportional-integral closed loop circuit driven by a DC servomotor. The compact electrodes are easily and rapidly interchangeable. The unit also provides an adjustable valve system for inert gas purging inside the cell vial.

RRDE-3A can be operated as a stand-alone unit and directly controlled by Model 2325 or other instruments. During or between electrochemical analyses, a built-in gas control allows purging the sample.

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Specifications and content

Compact design & easy operation
Remote and manual controlled rotation
Quasi-oxygen free sample vial design (up to 200 mL)
Gas line connector is available
Remote and manual controlled purge lines
Teflon cap is adapted for ALS reference and counter electrodes
Operable as RDE and RRDE
Allows remote control from the PC (rotational speed ON/OFF and gas purge ON/OFF)
Cell lead connects directly to Model 2325 or other potentiostats
Open architecture for easy access to cell

Size	190 (w) x (Base: 230, Body: 120)(d) x 400 (h)mm
Weight	3.5 kg
Rotational range	100 to 8,000 rpm
Rotation stability Error	< 0.5% at > 1,001 rpm < 1% at 100 to 1,000 rpm
Ring/Disk insulation resistance	> 10 M ohm
Electrode to lead pin contact resistance	5 ohm
Rotator shaft	Stainless steel
Motor	12 V, ironless core, low inertial DC servo
Power	12 VDC
Operating temperature	10 to 50 deg C
Relative humidity	≦ 80%
Inlet gas pressure	5 psi (34 KPa) maximum
Remote control	Motor ON/OFF TTL or relay input to back panel connection Purge TTL or relay input to back panel connection

Catalog No.	Description	QTY
ALS 013580	Sample vial for alkaline solution (100 mL)	1
ALS 012064	Spin coating adaptor	1
ALS 012065	Male connector for gas purge (PP)	1
ALS 013392	TYGON tubing, OD1/4” x ID1/8”	1
ALS 013271	RRDE-3A Teflon cap V.2	1
ALS 012642	RRDE-3A Sillicon sheet 100x180 mm	1
ALS 012975	O-ring for RRDE-3A Bearing assembly	3
	AC adapter	1
	Power cable	1
	Quick manual	1

Catalog No.	Description
ALS 012632	Sample vial (100 mL)
ALS 013580	Sample vial for alkaline solution (100 mL) (10 pcs)
ALS 013581	Sample vial for alkaline solution (200 mL) (8 pcs)
ALS 013582	RRDE-3A Teflon cap (for 200 mL)
ALS 013343	O-ring for RRDE-3A Teflon cap V.2

Catalog No.	Description
ALS 012961	Platinum counter electrode 23 cm
ALS 012962	Gold counter electrode 23 cm
ALS 012963	Nickel counter electrode 23 cm

Catalog No.	Description
ALS 013645	O-ring for RRDE-3A Shaft (white) (3 pcs)
ALS 012641	O-ring for RRDE-3A Bearing assembly (10 pcs)
ALS 012074	CB-ES Remote cable
ALS 009131	Port plug

Catalog No.	Description	Length (mm)	OD (mm)	Ring Size ID/OD	Disk Dia. (mm)
ALS 012613	RRDE Pt ring/GC disk electrode	25	12	5.0/7.0	4.0
ALS 012614	RRDE Pt ring/Pt disk electrode	25	12	5.0/7.0	4.0
ALS 012615	RRDE Pt ring/Au disk electrode	25	12	5.0/7.0	4.0
ALS 012616	RRDE Au ring/GC disk electrode	25	12	5.0/7.0	4.0
ALS 012617	RRDE Au ring/Pt disk electrode	25	12	5.0/7.0	4.0
ALS 012653	RRDE Au ring/Au disk electrode	25	12	5.0/7.0	4.0

Catalog No.	Description	Length (mm)	OD (mm)	Disk Dia. (mm)
ALS 011169	RDE GCE Glassy carbon disk electrode	25	12	3.0
ALS 013490	RDE GCEt Glassy carbon disk electrode*1	25	12	3.0
ALS 013482	RDE GCE Glassy carbon disk electrode	25	12	5.0
ALS 013491	RDE GCEt Glassy carbon disk electrode*1	25	12	5.0
ALS 011170	RDE PTE Platinum disk electrode	25	12	3.0
ALS 011171	RDE AUE Gold disk electrode	25	12	3.0
ALS 011966	RDE ALE Aluminum disk electrode	25	12	3.0
ALS 011967	RDE AGE Silver disk electrode	25	12	3.0
ALS 011968	RDE CUE Copper disk electrode	25	12	3.0
ALS 011969	RDE NIE Nickel disk electrode	25	12	3.0
ALS 011970	RDE TAE Tantalum disk electrode	25	12	3.0
ALS 011971	RDE TIE Titanium disk electrode	25	12	3.0
ALS 011972	RDE WE Tungsten disk electrode	25	12	3.0
ALS 011973	RDE CPE Carbon paste disk electrode*2	25	12	3.0

∗1: Teflon ring spacer type.

∗2: 001010 CPO Carbon paste oil base is sold separately.

Custom made electrode for RDE (rotating disk electrode) or RRDE (rotating ring disk electrode) is available.

DRE (Disk Replaceable Electrode) is available.

Catalog No.	Description	Length	OD
ALS 012167	RE-1B Reference electrode (Ag/AgCl)	78 mm	6.0 mm
ALS 013613	RE-1BP Reference electrode (Ag/AgCl)	90 mm	6.0 mm
ALS 013691	RE-1CP Reference electrode (Ag/AgCl/Saturated KCl)	92 mm	6.0 mm
ALS 013693	RE-2BP Calomel reference electrode	92 mm	6.0 mm
ALS 012617	RE-2CP Reference electrode (saturated K2SO4)	92 mm	6.0 mm
ALS 013692	RE-7N Non Aqueous reference electrode	81 mm	6.0 mm

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