The J2 cell is a simplified version of our flagship J1 cell. It offers a standard 3-electrode configuration without the bulky reference arm of the J1. The J2 is more suitable for organic electrolytes and for air-sensitive chemistry than the J1, but it can of course also be used with standard aqueous electrolytes. To learn more about the main differences between the J1 and the J2, check out our quick guide.

Key Features

• choice of PEEK or PTFE polymer cell base
• PEEK holder for ATR element
• glass cell body
• completely-sealed cell design suitable for non-aqueous electrolytes and air-sensitive chemistry
• 3-electrode cell configuration
• spring-loaded pins electrically contact the thin film working electrode
• purge available using needles through a septum or with FEP tubing using the optional purge cap

For a complete list of the parts included with the J2, please consult the manual.

Product Variants

Several J2 variants are available. The principal choices for the user are:

Choice of cell base material

The J2 cell base is available in two different material types: PTFE and PEEK.

	PTFE	PEEK
Chemical Robustness	The gold standard in chemical inertness and resistance.	Highly chemically resistant, but lower resistance than PTFE. Incompatible with concentrated nitric and sulfuric acids.
Mechanical Strength	Some care must be taken to avoid damaging the threads of the finely tapped holes for contact screws.	More mechanically robust. The threads are less likely to be damaged during assembly.
Rigidity	Soft material which may deform if dropped.	Rigid, non-deformable material.

Choice of ATR element holder

Two holder options are available, depending on which ATR element the user wishes to use. The ATR elements are sold separately.

FAC Holder	Wafer Holder
PIKE Face-Angled Crystals (FACs) have an anti-reflective coating which increases spectral throughput and improves signal to noise. SEIRAS signals are up to twice as strong using the FAC compared to a conventional hemisphere. However, strongly absorbing Si phonon modes impose a low-wavelength cutoff around 1250 cm-1.	The wafer holder accommodates 500 μm thick microgrooved ATR wafers, an inexpensive alternative to larger ATR crystals. The underside of the wafer is patterned with microprisms to enable excellent optical coupling. The low pathlength minimizes throughput loss from Si phonon modes, allowing access to the complete mid-IR spectral range from 5000 to 400 cm-1.

Product Number	Product Name	Cell Base Material	ATR Element Holder
162-4701	J2FP	PEEK	FAC
162-4702	J2WP	PEEK	Wafer
162-4703	J2CP	PEEK	FAC and Wafer (both included)
162-4704	J2FT	PTFE	FAC
162-4705	J2WT	PTFE	Wafer
162-4706	J2CT	PTFE	FAC and Wafer (both included)

ATR Elements

Electrodes

Note: Every J2 cell comes packaged with one user-serviceable Ag/AgCl reference electrode.

Add-ons