Brand: CH Instruments | Category: Nanotechnology
CHI220 is the simple cell stand in the CH Instruments range, made of stainless steel and Teflon and shown in two published figures. Four glass cells are included with it. CH Instruments note that the stand is not remote-controllable.
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CHI221 is a cell top supplied with a platinum wire counter electrode already fitted. CH Instruments state explicitly that it is not a replacement part for the CHI220 Simple Cell Stand.
The faraday cage is catalogued separately as CHI202 and forms the screening half of the CHI200(B) Picoamp Booster and Faraday Cage. CH Instruments state that it removes electrical interference, line frequency noise in particular, and that it also makes relatively fast measurements of small currents possible. Where an electrochemical cell is picking up noise from its surroundings, CH Instruments recommend adding the cage.
CHI222 is the glass cell listed singly on the CH Instruments accessory list. Four cells of this kind ship with the CHI220 Simple Cell Stand, so the part covers additional or replacement cells for that hardware.