The active surface is a flat glassy carbon disk at the tip of an insulating body. Thanks to its chemical stability and wide potential range, glassy carbon is the most frequently used carbon electrode material; the wide range comes from its high overpotential for hydrogen and oxygen evolution. Electrocatalysis tests are run by drop-casting catalyst ink onto the disk, and it is also common in voltammetry and sensor work.

This version has a T-shaped PTFE body: the lower part is a wider cylinder, with the glassy carbon disk on its end face. The T type is chosen to fit the body size required by specific cells or holders. Disk diameters: Ø1–6 mm (US) or Ø1–10, 15, 20 mm (Japan). PTFE is inert to nearly all chemicals but soft. Straight, L-shaped and PEEK T-type versions are separate products.

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
Glassy carbon: the most common type of carbon electrode; chemically stable with a wide potential range
T-shaped body: the lower section of the straight body is a wider cylinder; the disk sits on its end face
Surface suited to preparing thin films by drop-casting catalyst ink onto the disk
Surface can be polished to a mirror finish; final polishing with 0.05 µm alumina
US-origin (Ø1–6 mm) and Japan-origin (Ø1–10, 15, 20 mm) glassy carbon disk options
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	T-shaped; lower body section is a wider cylinder, disk on its end face
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
Voltammetry and impedance measurements in cells and holders designed for the T-shaped body
Electrocatalyst tests: thin films prepared by drop-casting catalyst ink onto the disk
Development of electrochemical sensors, biosensors and chemically modified electrodes