Sample Holder 25 MM X 25 MM

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The sample holder (known also as flat specimen holder) is used for holding flat, circular or square/rectangular samples. It enables contacting the sample from the front (e.g. ITO/FTO glass, Monolayer Graphene on SiC, or Boron-Doped Diamond thin film on various substrates) and from the back (e.g. metal specimen, Glassy Carbon plate, Boron-Doped Diamond plate). The default nominal aperture is 1cm², but other value can be provided on request. The large electrical contact with Tantalum (formerly Copper) foil surface (not being in contact with an electrolyte) ensures optimal current collection by minimizing electrical resistance and unifying current distribution. The rod with electrical connection has a diameter of 6 mm, which makes the sample holder compatible with our voltammetry cells and jacketed cells, as long as it fits in. We may also provide an adapter to install this sample holder in openings larger than 6 mm dia.
The sample holder elements are constructed with materials that are inert to the electrochemical system (PEEK, Fluorocarbons). It well fits aqueous (FKM/EPDM O-Rings) and organic solvent (FFKM O-Rings) electrolyte requirements. The construction is well sealed which prevents the electrolyte to leak inside.

Application Note:

The sample holder is used largely for corrosion studies. It can be installed in a beaker type cell as well as in testing environments such as open water reservoirs, cans, tanks etc. It can also be used wherever it is necessary to make an electrode using a thin layer of an active material deposited on a flat substrate (conducting or insulating).

Operating Video Manual:

Specification:

Nominal aperture range: 0.008 cm²(1 mm dia.) - 4.155 cm² (23 mm dia.)
Minimum aperture: 0.008 cm² (1 mm dia.)
Maximum aperture: 4.9 cm² (23 mm dia.)
Electrical connection diameter (rod): 6 mm
Minimum substrate size:

nominal aperture	minimum substrate size
0.008 cm² (1 mm dia.)	10 x 10 mm² (square) or 12 mm dia. (circular).
0.196 cm² (5 mm dia.)	7 x 7 mm² (square) or 10 mm dia. (circular).
0.283 cm² (6 mm dia.)	8 x 8 mm² (square) or 11 mm dia. (circular).
0.385 cm² (7 mm dia.)	9 x 9 mm² (square) or 12 mm dia. (circular).
1 cm² (11.3 mm dia.)	13 x 13 mm² (square) or 16 mm dia. (circular).
3.5 cm² (21 mm dia.)	23 x 23 mm² (square) or 25 mm dia. (circular).
4.155 cm² (23 mm dia.)	25 x 25 mm² (square only)

maximum substrate size: 25 x 25 mm²
maximum sample thickness: 4 mm
contact type: front or back

Product Includes:

1 x chamber
1 x lid
1 x contact (Tantalum foil)
1 x rod with electrical connection

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