Here, measurements take place on a polished glassy carbon disk embedded in 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 is the standard straight type: the glassy carbon disk sits at the tip, in line with the PEEK rod, and the electrode is dipped vertically through the cell lid. Disk diameters: Ø1–6 mm (US) or Ø1–10, 15, 20 mm (Japan). PEEK is hard and rigid and keeps its shape when the electrode is often refitted, but concentrated sulfuric and nitric acid damage it. L- and T-shaped types and a PTFE version are separate products.

Key Features

Standard straight body: the disk sits on the end face, in line with the rod; the electrode is dipped vertically into the cell
PEEK body: hard and rigid (Shore D ≈ 85) and resistant to creep under load; not for use with concentrated sulfuric or nitric acid
Glassy carbon: the most common type of carbon electrode; chemically stable with a wide potential range
US-origin (Ø1–6 mm) and Japan-origin (Ø1–10, 15, 20 mm) glassy carbon disk options
Surface suited to preparing thin films by drop-casting catalyst ink onto the disk
Body length 60 mm, total length ≈75 mm (manufacturer data); gold-plated contact pin at the tail
Surface can be polished to a mirror finish; final polishing with 0.05 µm alumina

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	PEEK (polyether ether ketone)
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	Resistant to most aqueous and organic media; not compatible with concentrated sulfuric acid, concentrated nitric acid or halogen acids such as HF, HBr, HI
Operating temperature	Not specified for this product. One electrode maker recommends 10–80 °C for similar PEEK-body disk electrodes; extreme temperatures can damage the disk–body 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

Routine voltammetry in standard three-electrode glass cells, with the electrode dipped vertically through the lid
Cyclic and linear sweep voltammetry (CV, LSV), differential pulse voltammetry (DPV)
Electrocatalyst tests: thin films prepared by drop-casting catalyst ink onto the disk
Development of electrochemical sensors, biosensors and chemically modified electrodes
Setups where the electrode is frequently removed and refitted and the body is under mechanical stress