Active area
Select 1–25 cm² through the gasket window
MEA test hardware designed for evaluating customer-supplied catalysts, electrodes and membranes. Choose the active area and cell count, and compare them in the same hardware.
The HXS-0 is a made-to-order test cell with a selectable 1–25 cm² active area, available from a single cell up to a 20-cell short stack. It ships four weeks from PO acceptance once the active area, cell count and flow field are fixed.

HXS-0 is electrolyzer test cell hardware: it sets active area through the gasket window and scales from a single cell to a short stack. The key is to define the boundary between cell hardware, MEA and your power and circulation equipment.
Set the active area, cell count, MEA and available test equipment to define the required hardware.
Select 1–25 cm² through the gasket window
Single cell to 20-cell short stack
Own or third-party MEA, or HXP electrodes
Power, circulation, temperature control and data logging
The label on each chart says whether it is measured, test or design-target data. Test conditions are in each chart caption.
Catalogue i-V performance curve · 4 cm² · HXP-an · 1 M KOH · 80 °C · 2.00 V at 6.6 A/cm²

The specification table, support terms and review documents.
| Use | Research/evaluation single cell / short stack |
|---|---|
| Active area | 1–25 cm² (set by the gasket window) |
| Configuration | Single cell up to a 20-cell short stack |
| Electrodes | HXP-an · HXP-ca |
| Operating condition | Up to 80 °C · atmospheric pressure |
| Structure | Anode-side electrolyte circulation |
| Build | Available · made to order after active area, cell count and flow field are fixed |
| Materials | SUS316L end plates · nickel-based bipolar plates · PTFE gaskets |
| Flow field | Single-serpentine standard · custom flow field available for the test objective |
| Fastening | M6 · no press required · tightening sequence and torque supplied in the assembly guide · electrode terminals M4 · 1.5–2.0 N·m |
| Fluid connection | 1/4″ double-ferrule |
| MEA compatibility | MEA excluded from the standard supply · HXP-an, HXP-ca and membrane MEA available on request |
| Dimensions | 114 × 85.6 × 136 mm |
| Weight | 4 kg |
Use the line below in the Methods section when reporting the material source.
AEM electrolysis test cell (HXS-0, HydroXpand Inc., Republic of Korea)Ask [email protected] if the lot number is required.
Consumables such as gaskets are supplied separately, and the active area and cell count are fixed in the quotation.
Available · made to order · 4 weeks after active area, cell count and flow field are fixed and the PO is accepted
EXW basis; DAP and other terms by agreement. Country of origin is the Republic of Korea, with certificate of origin provided.
Pricing depends on quantity and Incoterms, so it is issued as a quotation. Before asking for one, compare five years of buying cylinders against making the same hydrogen on site.
Cost vs cylinders calculatorMinimum order, lead time, formats and how pricing works. The full FAQ covers operating and integration questions.
HydroXpand sells it directly. Send the active area (1–25 cm²), cell count (1 to 20 cells), flow field and quantity through the enquiry form or to [email protected]; we return a quotation with price, lead time and Incoterms, and the lead time counts from the day we accept your purchase order.
HXS-0 is made to order once the active area, cell count and flow field are fixed; the standard lead time is four weeks from PO acceptance and specification sign-off.
The base configuration does not include an MEA, and both our own and third-party MEAs are compatible. On request we supply it as an MEA configuration with HXP-an and HXP-ca electrodes and a membrane.
Yes. The active area is set by the gasket window anywhere from 1 to 25 cm², so 9 cm² is within the standard range. The default flow field is single-serpentine and other geometries are made to order, and the SUS316L end plates and separator material can be changed to titanium or other alloys.
Price depends on active area, cell count, flow field, materials and Incoterms, so it is issued as a quotation.
EXW is the base term and other Incoterms such as DAP are available. The country of origin is the Republic of Korea; a certificate of origin is provided, so FTA preference may apply in countries that have an FTA with Korea.
Send the active area, cell count, MEA and available equipment, and we will define the required configuration.