The active surface is a flat glassy carbon disk at the tip of an insulating body. Glassy carbon is the most common type of carbon electrode: it is chemically stable and, because of its high overpotential for hydrogen and oxygen evolution, works over a wide potential range. It is widely used in cyclic voltammetry, sensor development and electrocatalysis tests with drop-cast catalyst ink.

This model has a standard straight PTFE body, with the glassy carbon disk at the tip, in line with the rod. Disk diameters: Ø1–6 mm (US) or Ø1–10, 15, 20 mm (Japan). PTFE is inert to nearly all acids, bases and solvents, so it also suits electrolytes that attack PEEK, like concentrated sulfuric acid. It is soft, so avoid scratching or denting it. PEEK, L- and T-type versions are on separate pages.

Key Features

PTFE body: inert to nearly all acids, bases and solvents; as a soft material (Shore D ≈ 55) it needs care against scratches and dents
Standard straight body: the disk sits on the end face, in line with the rod; the electrode is dipped vertically into the cell
Glassy carbon: the most common type of carbon electrode; chemically stable with a wide potential range
Surface suited to preparing thin films by drop-casting catalyst ink onto the disk
US-origin (Ø1–6 mm) and Japan-origin (Ø1–10, 15, 20 mm) glassy carbon disk options
Surface can be polished to a mirror finish; final polishing with 0.05 µm alumina
Body length 60 mm, total length ≈75 mm (manufacturer data); gold-plated contact pin at the tail

Technical Specifications

Electrode type	Glassy carbon disk working electrode
Electrode shape	Standard straight rod; disk on the end face, in line with the body axis
Body material	PTFE (polytetrafluoroethylene)
Disk diameter	US-origin: 1, 2, 3, 4, 5, 6 mm · Japan-origin: 1–10, 15, 20 mm
Glassy carbon length	5–10 mm (manufacturer data)
Body / total length	60 mm / ≈75 mm (manufacturer data)
Connection	Gold-plated pin
Approx. potential window (vs. RHE)	0.1 M H₂SO₄: ≈ −0.42 to +1.76 V · 0.1 M NaOH: ≈ −0.64 to +1.66 V; depends on electrolyte and purity
Polishing	Alumina slurry on microcloth (final step 0.05 µm), then rinse with pure water; if needed, ultrasonic cleaning for no more than 5 minutes
Body chemical resistance	Inert to nearly all chemicals and solvents; attacked only by very reactive substances such as elemental alkali metals, elemental fluorine and chlorine trifluoride
Operating temperature	Not specified for this product. One electrode maker recommends 10–25 °C for similar PTFE-body disk electrodes; a body expanding with heat can break the seal

Available Options

Origin and Diameter	Description
US-Origin 1 mm	US-origin glassy carbon, Ø1 mm disk
US-Origin 2 mm	US-origin glassy carbon, Ø2 mm disk
US-Origin 3 mm	US-origin glassy carbon, Ø3 mm disk
US-Origin 4 mm	US-origin glassy carbon, Ø4 mm disk
US-Origin 5 mm	US-origin glassy carbon, Ø5 mm disk
US-Origin 6 mm	US-origin glassy carbon, Ø6 mm disk
Japan-Origin 1 mm	Japan-origin glassy carbon, Ø1 mm disk
Japan-Origin 2 mm	Japan-origin glassy carbon, Ø2 mm disk
Japan-Origin 3 mm	Japan-origin glassy carbon, Ø3 mm disk
Japan-Origin 4 mm	Japan-origin glassy carbon, Ø4 mm disk
Japan-Origin 5 mm	Japan-origin glassy carbon, Ø5 mm disk
Japan-Origin 6 mm	Japan-origin glassy carbon, Ø6 mm disk
Japan-Origin 7 mm	Japan-origin glassy carbon, Ø7 mm disk
Japan-Origin 8 mm	Japan-origin glassy carbon, Ø8 mm disk
Japan-Origin 9 mm	Japan-origin glassy carbon, Ø9 mm disk
Japan-Origin 10 mm	Japan-origin glassy carbon, Ø10 mm disk
Japan-Origin 15 mm	Japan-origin glassy carbon, Ø15 mm disk
Japan-Origin 20 mm	Japan-origin glassy carbon, Ø20 mm disk

For sizes and specifications not listed above, you can request a custom quotation through the Quote Form.

Applications

Cyclic and linear sweep voltammetry (CV, LSV), differential pulse voltammetry (DPV)
Measurements in strongly acidic electrolytes that damage PEEK, such as concentrated sulfuric acid
Routine voltammetry in standard three-electrode glass cells, with the electrode dipped vertically through the lid
Electrocatalyst tests: thin films prepared by drop-casting catalyst ink onto the disk
Development of electrochemical sensors, biosensors and chemically modified electrodes