Electrochemistry: potentiostat, galvanostat, EIS, FC test station

 


Glassware & cells
 

Cell Vials

Various shapes and sizes of PYREX glass cell vials are available for users' purposes. Please be referred to their capacity as well.

 

Catalog No. Description Sample Volume Quantity Application
A-001056 Sample vial 20 mL 10 pcs VC-2, VC-3, VC-5, SVC-3, MCA
A-011504 Sample vial 5 mL 10 pcs VC-4
A-001051 Water Jacketed Glass cell 20 mL 1 pc VC-2, VC-3, VC-5, SVC-3, MCA

 

Catalog No. Description Sample Volume Quantity Application
A-001195 100 mL Glass cell vial 100 mL 1 pc Bulk Electrolysis cell
A-001194 Water Jacketed Glass cell (for bulk) 100 mL 1 pc Bulk Electrolysis cell

 
Catalog No. Description Sample Volume Quantity Application
A-012062 Sample vial for RRDE-3 60 mL 12 pc RRDE-3
A-012018 Water Jacketed Cell vial 60 mL 1 pc RRDE-3

 

Catalog No. Description Sample Volume Quantity Application
A-012061 Glassware 20 mL 12 pc RDE-2, RRDE-3
A-009987 Water Jacketed Cell vial 20 mL 1 pc RDE-2

Accessories

Catalog No. Description
A-011226 Cell holder for 5 mL vial
A-001209 Cell holder for 20 mL vial

 

VC-2 Voltammetry cell

Counter electrode of Voltammetry cell for VC-2 is exchangeable. Teflon-coated cell cap equips removable teflon-coated working electrode holder. Sample holder for the measurement with a small volume (100 - 200 µL) is available as an optional component.

Components of VC-2/VC-3 cell can be provided separately. In that case, each sample vial (010343) includes 10 pieces per the sales unit.

 

Catalog No. Description
A-001052 VC-2 Voltammetry cell
Contents
A-001056 Sample vial (20 ml) 7 pcs
A-002222 Pt counter electrode for VC-2 cell
A-009028 Teflon cap for VC-2
A-010537 Purging tube

 

VC-3 Voltammetry cell

Voltammetry cells consist of 4 kinds of products - platinum counter electrode, sample vials, teflon cap and gas purging tube.

 
Catalog No. Description
A-002232 VC-3 Voltammetry cell
Contents
A-001056 Sample vial (20 ml) 7 pcs
A-002233 5 cm Platinum counter electrode for VC-3 cell
A-009035 Teflon cap for VC-3
A-010537 Purging tube

 

VC-4 Voltammetry cell

Capable for measuring of 1 - 3 ml of sample volume using electrodes with 6 mm of the diameter. Furnished holder prevents the vial from spilling.

 

Catalog No. Description
A-011224 VC-4 Voltammetry cell
Contents
A-011504 Sample vial (5 ml) 7 pcs
A-011226 Teflon cap for VC-4
A-011227 Cell holder for VC-4
A-002222 Pt counter electrode for VC-2 cell
A-010537 Purging tube

Components of VC-4 cell can be provided separately. In that case, each sample vial (011835) includes 10 pieces per the sales unit.

VC-5 Voltammetry cell

Voltammetry cells consist of 4 kinds of products - platinum counter electrode, sample vials, teflon cap and gas purging tube.

Components of VC-5 cell can be provided separately. In this case, each sample vial (001056) includes 10 pieces per the sales unit.

Catalog No. Description
A-012188 VC-5 Voltammetry cell
Contents
A-001056 Sample vial (20 mL) 7 pcs
A-002233 Pt counter electrode for VC-3 cell 5 cm Pt
A-011885 Teflon cap for VC-5
A-010537 Purging tube

 

SVC-3 Oxygen-free Voltammetry cell

By using this cell, researchers can run experiments free from gasificationed steam. Also, recearchers can get rid of infruelnce of oxygen in the cell by bubbling nitrogen gas. This features are well suited for measurements by ultraweak current. Sample volume: 5-10 mL.

 
Catalog No. Description
A-010914 SVC-3 Oxygen-free Voltammetry cell
Contents
A-001056 Sample vial (20 ml) 7 pcs
A-002233 5 cm Platinum counter electrode for VC-3 cell
A-011811 Teflon cap for SVC-3
A-010537 Purging tube

 

Micro volume cell

MCA Micro cell requires only 50-200 µL of analyte. This is an advantage for the researchers who need to study with a small volume of sample. Users can select their appropriate working electrodes from our various CV electrodes.

[How To Use]

  1. Prepare supporting electrolyte in a cell vial and sample in the sample holder. Be sure to equalize their electrolyte concentration.
  2. Place a counter electrode in the cell vial. When organic solvent is used, it should be put inside the sample holder to avoid IR drop at the Vycor glass frit. In that case, please choose 3 mm diameter of CV electrodes.
  3. Insert teflon tube into the cell or the sample holder, purge N2 gas to eliminate oxygen.

[Reminder]

  • To lower electric resistance, please soak the Vycor frit of sample holder into supporting electrolyte solution at least for one hour prior to use. These frits need to be kept immersed in solution all of time.
  • If obtained data is shifted, IR drop may be caused. In that case, please increase the supporting electrokyte as much as five times or add approximately 0.5 M of NaCl.
Catalog No. Description
A-011520 MCA Micro cell kit
Contents
A-001052 VC-2 Voltammetry cell
A-012177 Sample holder dia 9 mm (2 pcs)

 

Bulk Electrolysis cell

This product is utilized for complete electrolysis. As mentioned below, carbon working electrode is a reticulated form that provides with sufficient surface area to gain the rate in electrolysis. The water jacketed cell can be purchased separately. Platinum mesh electrode is also available as a custom order. The platinum counter electrode equips a separating chamber. The progress of an electrolysis can be investigated by inserting additional indicator electrode (required to be prepared by users themselves). That insertion requires a port plug when the indicator electrode is not used.

Suitable for:

  • Quantitation of mass transfer of the electron per molecule
  • Measuring the absolute quantity of the analyte
  • Electrolytic synthesis of new materials (generally in quantity of milligram)
  • etc.
Catalog No. Description
A-001197 Bulk Electrolysis Cell
Contents
A-001195 100 ml Glass cell
A-010530 Porous carbon electrode
A-002234 Platinum counter electrode 23 cm
A-001198 Lid for counter electrode
A-001196 Chamber for counter electrode
A-001236 O-ring for counter electrode
A-009131 Port plug
A-000178 Stirrer bar
A-001199 Teflon Cap (for bulk)
A-010537 Gas purging tube

 

Optional components

Catalog No. Description Size
A-002250 Platinum gauze electrode 80 mesh 25 x 35 mm
A-002251 Gold gauze electrode 100 mesh 25 x 35 mm
A-001194 Water Jacketed Glass cell (for bulk)

 

Plate Material Evaluating cell

This quite handy cell is developed in order to evaluate plate material such as metal, semi-conducting plate, etc. In evaluation, a sample plate is sandwiched between cell blocks.

 

Catalog No. Description Quantity
A-011951 Plate Material Evaluating Cell 1
Contents
Teflon Cell [Body] 1
Teflon Cell [Base] 1
O-ring 1
Screw 20 mm 2
Purging tube 1 m 1
A-002222 Pt counter electrode for VC-2 cell 1

 

[Optional Product] Reference Electrode

Users can select a reference electrode separately for this cell from :

Catalog No. Description
A-012167 RE-1B Silver-Silver chloride reference electrode
A-012171 RE-7 Non Aqueous reference electrode
A-002058 RE-1C Silver/Silver Chloride Reference Electrode (Saturated KCl)
A-002056 RE-2B Calomel Reference Electrode
A-002057 RE-2C Reference Electrode
A-011503 RE-6H Reference Electrode Kit available in alkaline solution

[ How to Set Up ]

  1. Place a plate sample on a lower side teflon block of the cell. Applicable plate dimensions : W: 10-20 mm, T: ~3 mm
  2. Put another teflon block on the sample, and drive two screws evenly to fix the plate. Liquid contact area depends on inner diameter of the O-ring. Deliver approximately 1 ml of electrolyte after fixing the plate.
  3. Attach a Pt counter electrode and a reference electrode to the cell by setting them onto a cell cap. We would recommend you to twist up the Pt part appropriately if the counter electrode is longer.

Flow cell

Working Electrodes for Flow Cell

Our Working electrodes for flow cell are mounted on blocks of PEEK. This resin protects the electrodes from external noise and allows researchers to utilize them regardless the content of mobile phase of HPLC because of their hard, organic solvent-resistance. Glassy carbon is usually chosen for the redox reaction study on liquid chromatography. Platinum, Gold, Carbon paste and Nickel electrodes are utilized for special purposes.Features

  • Become stable immediately
  • Usable with acid, alkaline, and organic solvents
  • Easy maintenance of Working electrodes by wipe with acetone
  • Working electrodes can be refreshed using PK-3 cell Polishing Kit
  • Can be used as chemically modified electrodes or bio-sensors

Cross Flow Cell - Structure

Cross Flow Cell is capable of quantitation at the level of 10-15 mol by the flow rate: 1 mL/min - 100 µL/min.

Features

  • Detection electrode for HPLC
  • Electrode for flow injection
  • Electrode for bio-sensor development
Catalog No. Description Application
A-002456 Cross flow cell (Glassy Carbon) Working electrode: GC, dia. 3 mm x 2 (dual type)
A-002457 Cross flow cell (Platinum) Working electrode: Pt, dia. 3 mm x 2 (dual type)
A-012122 Cross flow cell (Gold) Working electrode: Au, dia. 3 mm x 2 (dual type)

 

Contents
Item Material Quantity
Working Electrode for cross flow cell   1
Reference Electrode (RE-3V Silver-silver chloride Reference electrode Screw type) POM *1 1
Cross Flow cell block PEEK *2 1
Flow cell base block POM 1
Screw for base block SUS *3 2
Flow cell arm SUS 2
Screw for arm SUS 2
Working Electrode connector brass 1
Hand screw for clamp SUS 1
Stainless plate for clamp SUS 1
Clamped plate SUS 1
Teflon tube ETFE 30 cm
80 cm
Silicon tube Si 2 cm
28 cm
Stainless pipe 5 cm SUS 1
TG-5M Teflon Gasket (Cross Flow) FEP 1
Dynaseal PEEK fingertight PEEK 3

*1 Polyacetal resin *2 Polyether-ether-ketone *3 Stainless Used Steel

Cross Flow Cell - Working Electrode

Radial Flow cell

Radial Flow Cell is developed for microbore chromatography. Its detecting efficiency will improve when flow rate is 10 µL/min or lower. This flow cell consists of thin layer electrode and symmetric design.

Catalog No. Description Application
A-003456 Radial flow cell (Glassy Carbon) Working electrode: GC, dia. 6 mm (single type)
A-003457 Radial flow cell (Platinum) Working electrode: Pt, dia. 3 mm (single type)
A-011236 Radial flow cell (Gold) Working electrode: Au, dia. 3 mm (single type)

 

Contents
Item Material Quantity
Working Electrode for Radial flow cell   1
Reference Electrode (RE-3V Silver-silver chloride Reference electrode Screw type) POM 1
Radial Flow cell block PEEK 1
Flow cell base block POM 1
Screw for base block SUS 2
Flow cell arm SUS 2
Screw for arm SUS 2
Hand screw for clamp SUS 1
Stainless plate for clamp SUS 1
Clamped plate SUS 1
Teflon tube ETFE 30 cm
80 cm
Silicon tube Si 2 cm
28 cm
Stainless pipe 5 cm SUS 1
TG-5MR Teflon Gasket (Radial Flow) FEP 1
Dynaseal PEEK fingertight PEEK 3

 

Electrodes and Accessories for Flow Cell Kit

Application of Electrodes

  • GC: commonly used for measurement of Redox behavior
  • PFC: commonly used for measurement of Redox behavior
  • Au: measurement of thiol-related compounds with amalgamate electrode
  • Pt: measurement of hydrogen peroxide and oxidized substance
  • Ag: measurement of cyano-sulfide
  • CP: derivatizationed electrode by filling compound of carbon paste, enzyme and chemical substance into it
  • Ni: amino acids measurement by chemical derivatization
Type Catalog No. Item Description
Cross
Flow		 A-001000 Glassy Carbon Electrode for cross flow cell dia. 3 mm x 2 (dual type),
Size: 25 x 25 mm
A-001002 Gold Electrode for cross flow cell
A-001012 Platinum Electrode for cross flow cell
A-001008 Silver Electrode for cross flow cell
A-001004 Carbon Paste Electrode for cross flow cell
A-001009 Nickel Electrode for cross flow cell
A-001046 TG-2M Teflon Gasket (4 pcs) Film thickness: 12 µm
A-001047 TG-5M Teflon Gasket (4 pcs) Film thickness: 25 µm
A-001048 TG-6M Teflon Gasket (4 pcs) Film thickness: 50 µm
A-001049 TG-8M Teflon Gasket (4 pcs) Film thickness: 125 µm
A-001092 TG-11M Silicon Gasket (4 pcs) Film thickness: 500 µm
A-001093 TG-12M Silicon Gasket (4 pcs) Film thickness: 1000 µm
A-001032 Cross Flow cell block Material: PEEK
Radial
Flow		 A-001016 Glassy Carbon electrode for Radial flow cell dia. 6 mm (single type),
Size: 25 x 25 mm
A-010941 Copper electrode for radial flow cell
A-009908 Platinum electrode for radial flow cell dia. 3 mm (single type),
Size: 25 x 25 mm
A-011155 Gold Electrode for radial flow cell
A-000999 PFCE Carbon electrode for radial flow cell
A-010251 Carbon Paste Electrode for radial flow cell
A-001146 TG-2MR Teflon Gasket (4 pcs) Film thickness: 12 µm
A-001147 TG-5MR Teflon Gasket (4 pcs) Film thickness: 25 µm
A-001148 TG-6MR Teflon Gasket (4 pcs) Film thickness: 50 µm
A-001031 Radial Flow cell block Material: PEEK
Cross/Radial A-012169 RE-3V Ag/AgCl Reference electrode screw type Size: dia. 10 x 48 mm
A-001531 1/16" PEEK tube ID: 0.25 mm, Length: 3.0 m
A-004130 Dynaseal PEEK fingertight (10 pcs) Screw for pipe connecting
integrated 1/16"

 

Spectroelectrochemical cell

Spectroelectrochemistry (SEC) is aimed at the investigation of electrochemical reaction mechanism and the interface structure between electrolyte solution and electrode. Remarkable progress in this field and related technology enables SEC to be applied in wide areas. Nowadays, the relation between absorbance and potential for reversible or quasi-reversible system is theoretically elucidated, on which basis the analysis of electrochemical characteristics becomes possible for the system otherwise difficult with only the result of voltammogram. Typical example is redox enzyme cytochrome c and methylene-blue

  • Real-time monitoring of chromatic change by red-ox reaction
  • Analysis of the charge transfer at the electrode/liquid surface
  • Spectrometric measurement of near/surface of electrodes
  • Absorbing spectrum of the product and intermediate
  • Parameters; concentration, diffusion coefficient and life time

 

Catalog No. Description
A-011240 SEC-C Thin Layer Quartz Glass Spectroelectrochemical cell Kit
Components
A-011498 SEC-C Pt Gauze working electrode
A-011499 SEC-C Pt counter electrode
A-011500 SEC-C Thin Layer Quartz Glass cell Light pass length: 1 mm
A-011501 SEC-C Teflon Cap
A-010537 Purging tube

 


Front view
Side view

Reference Electrode for SEC-C

Reference Electrode can be chosen optionally from below:

Catalog No. Description
A-012167 RE-1B Silver-Silver chloride reference electrode Length:
80.0 mm		 OD: 6.0 mm
A-012171 RE-7 Non Aqueous reference electrode (Ag/Ag+) Length:
80.0 mm		 OD: 6.0 mm

Working Electrode for SEC-C

Catalog No. Description
A-012017 SEC-C Au Gauze working electrode
A-011498 SEC-C Pt Gauze working electrode

 

Spectroelectrochemical flow cell

Applications:

  • Study of charge transfer mechanism on the interface between electrode and electrolyte.
  • Spectroscopy on electrode surface or in the neighborhood.
  • Absorption spectra of products and intermediates.
  • Analysis of concentration, diffusion coefficient, life time so on.

Schematic view of flow cell (thin layer flow channel, light pass and working electrode) is shown below. Working electrodes (ITO, platinum mini-grid, and gold mini-grid) are replaceable. UV or visible light is introduced via optical-fiber from light source and the absorbed light is transferred into CCD via optical-fiber. Example of spectrum change during oxidation-reduction of ferrocene by CV is shown below.

Spectroelectrochemical electrodes

Schematic diagram of spectroelectrochemical flow cell

   

Pt and Gold mini Grid electrode

Pt mini-grid electrode is made by sputtering on quartz plate as shown in below picture. Size is 8 × 27mm, width of grid line is 150μm, space between lines is 100µm.

Cat No. Description
A-011320 SEC-F Spectroelectrochemical flow cell
Contents
A-011329 SEC-F flow cell base
A-011330 SEC-F flow cell block (A)
A-011331 SEC-F flow cell block (B)
A-011495 SEC-FT500 Teflon gasket (2 pcs)
A-010562 74-UV UV/VIS Collimating Lens, 200-2000 nm
------ Dynaseal PEEK fingertight (3 pcs)
------ Teflon tube (80 cm)
------ Silicon tube (30 cm)
------ Stainless tube OD 1/16" (50 mm)

Optional Products

Cat No. Description
A-011810 SEC-F 1000 µm probe type of optical fiber Length: 1 m
A-011496 SEC-F Pt grid electrode for flow cell 8 x 27 x 1 mmt
A-011497 SEC-F Au grid electrode for flow cell 8 x 27 x 1 mmt
A-011519 SEC-F ITO electrode for flow cell (4 pcs) 8 x 27 x 1 mmt
A-012169 RE-3V Silver-silver chloride Reference electrode Screw type φ10 x 55 mm
A-012173 RE-7V Non Aqueous reference electrode (Ag/Ag+) Screw type φ10 x 55 mm

 

Sample holders

These products enable to take electrochemical measurement by only 200 µL of the analyte with voltammetry cells. A vycor glass tip is attached to the end of its glass tube, and ions transmit freely.

Catalog No. Description SIZE
A-012177 Sample holder dia 9.0 mm (2 pcs) OD6 mm, ID7 mm, L55 mm
A-012176 Sample holder dia 6.0 mm (2 pcs) OD9 mm, ID4 mm, L55 mm
A-012175 Sample holder dia 4.5 mm (2 pcs) OD4.5 mm, ID2 mm, L40 mm

Vycor Glass products

Vycor® glass is porous glass with 40-200 Å diameter of pores. Chemically stable, operational as high as 800 °C. Also can be cut with a sharp knife.

Reminder:
Yellowish discoloration indicates the contamination. This is caused by absorbing of organics into their pores from the air.

Specifications

Specific gravity [in dry condition] 1.5
Void volume 28 %
Avr. pore diameter 40-200 Å
Internal surface area 250 m2/g

Catalog No. Description Quantity
A-012182 Vycor Glass Rod, dia 2.85x4.0 mm 25 pcs
A-012183 Heat shrink Teflon tubing, 100 mm 1
A-001087 Vycor glass tube
(OD:7 mm; ID:5 mm; Length:10 cm)		 1

PK-3 Electrode Polishing kit

Polishing kit to maintain good condition of working electrodes for CV/Flow cell.

Catalogue No. Description
A-011975 PK-3 Electrode Polishing kit
Contents
A-001050 0.05 µm polishing alumina (20 ml)
A-002054 1 µm polishing diamond (10 ml)
A-001040 Alumina polishing pad (10 pcs)
A-001041 Diamond polishing pad (10 pcs)
A-002249 Replacement glass plate for PK-3 (1 pc)

Contents of PK-3 can be provided separately. In that case, each polishing pad (A-001040 Alumina polishing pad/A-001041 Diamond polishing pad) includes 20 pieces of them per the sales unit.

How to polish the Working electrodes' surface with PK-3

  1. Prepare the glass plate, and put a few drops of polishing diamond on diamond polishing pad.
  2. Hold the CV electrode at right angle to the pad, and polish in a circular motion.
  3. Replace the diamond pad to an alumina polishing pad, put a few drops of polishing alumina, and polish the electrode to be mirror surface. Rinse the electrode surface with distilled water, and finish by air drying.

Attention: Polishing with PK-3 is the most appropriate way to clean up electrode surface. Please consult us when other methods are applied.

Polishing of PFCE Electrode & Pyrolytic Graphite Electrode

PFCE electrode can regain its electrochemical sensitivity and reproducibility by polishing with Emery paper sic#4000. After the polishing, please clean its surface with ultrasonic cleaner for 10-60 seconds (@ frequency: 50 KHz, output power: 100 W). PFCE electrode is a significantly competent electrode. In order to keep its performance from going to be eroded, we recommend re-polishing after a certain period of time.

Use of distilled water is required during this procedure. Sic#2000 grade emery paper is used at the preliminary stage only for persistent stain.

Notice*

Don't polish with a finer grade of emery paper ( #6000 etc.). PFCE electrode do not need mirror finish surface like a GC electrode.
   
 

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