The H-type replaceable-membrane cell is a two-compartment glass cell for electrocatalysis work where the cathode and anode reactions must be kept apart. The cathode and anode compartments are separated by an ion exchange membrane. This keeps products formed at one electrode from crossing to the other electrode and reacting again, and lets you control the electrolyte, pH and gas atmosphere of each compartment independently.

The flanges of the two compartments are joined with a chain clamp; opening the clamp lets you change the membrane in minutes. The reference electrode sits in the same compartment as the working electrode, which reduces the ohmic (iR) drop in solution. The PTFE inner core of the lid rotates 360° so the electrodes can be aligned with the channel (usually parallel to the membrane); tightening the outer POM cap then seals the cell.

In the standard-sealed cell, the lid and electrode feedthroughs are closed with O-rings and sealing screws. An oxygen-free atmosphere is maintained by purging with nitrogen or argon. It is not intended for vacuum or pressure.

The body is made of borosilicate glass 3.3, which has low thermal expansion (3.3 × 10⁻⁶ K⁻¹) and the highest resistance classes against water (HGB 1) and acids (S 1). Avoid sudden temperature differences above 120 °C to reduce the risk of breakage.

The single-layer body is a simple, economical choice for routine measurements at room temperature. If temperature control is needed, choose the jacketed version of the same cell.

Key Features

Two-compartment H-cell with cathode and anode separated by an ion exchange membrane
Quick membrane change with chain clamp
360° rotating PTFE electrode holder and POM outer cap
Sparger delivering gas below the liquid (straight or L-type)
Working and reference electrodes in the same compartment: low iR drop
Six volumes from 30 mL to 250 mL (per compartment)

Technical Specifications

Cell type	Two-compartment H-type, standard-sealed
Temperature control	None (jacketed version available as a separate product)
Body	Borosilicate glass 3.3, externally threaded necks
Lid	360° rotating PTFE core + POM outer cap
Compartment joint	Flange + chain clamp, membrane supplied by user
Gas	Sub-surface sparger + outlet port
Electrodes	Long type required
Volume options	30 mL, 50 mL, 100 mL, 150 mL, 200 mL, 250 mL
Not included	Electrodes and membrane (sold separately)

A sampling port can optionally be added to the cell body; please mention it in your quotation request.

Electrodes and membranes shown in the photos are for illustration only and are not included in the price. Compatible reference, counter and working electrodes and membranes are available in the Electrodes category of our site.

For volumes, dimensions or port layouts other than those listed, you can request a custom-made quotation through the Quotation Form.