Brand: CH Instruments | Category: Nanotechnology
The CHI120 is the consumable kit CH Instruments supply for renewing the surface of their solid working electrodes. Its published instruction sheet lists 4 grams of 1.0 micron MicroPolish powder, 4 grams of 0.3 micron powder, 18 grams of 0.05 micron powder, two glass plates for the polishing pads, and three grades of 73 mm diameter disc and pad. The stated routine works down through 1.0, 0.3 and 0.05 micron alumina until the electrode surface is mirror shiny, starting at the 1200 grit Carbimet disc if scratches will not lift.
| Parameter | Value |
|---|---|
| Polishing powder grades | 1.0 µm, 0.3 µm and 0.05 µm |
| Powder quantities | 4 g, 4 g and 18 g respectively |
| Glass plates | 2 |
| Abrasive discs | 5 × 73 mm, 1200 grit |
| Polishing pads | 5 nylon and 10 microcloth pads, 73 mm diameter |
Contents stated in the manufacturer’s CHI120 instructions. Confirm current kit contents and compatibility with the electrode material. Checked 2026-09-29.
Manufacturer reference document (opens in a new tab)
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CHI125A is the coated quartz crystal CH Instruments list for electrochemical quartz crystal microbalance work, published as polished, bounded and mounded with a 100 A titanium layer beneath 1000 A of gold. It is the consumable crystal for the CHI127 EQCM cell and the 400C Time-Resolved Electrochemical Quartz Crystal Microbalance (EQCM) instrument series.
CHI117 is the 25 micron diameter platinum SECM tip, the coarser of the two sizes CH Instruments list. Like the CHI116 it serves as the scanning probe for the 920D Scanning Electrochemical Microscope (SECM).
The CHI127 is the electrochemical cell CH Instruments publish for quartz crystal microbalance measurements, shown in its own photograph on the accessory list. CH Instruments list a matching reference electrode as CHI128 and a platinum wire counter electrode as CHI129 for it, with the CHI125A gold coated crystal as the working surface. It supports the 400C Time-Resolved Electrochemical Quartz Crystal Microbalance (EQCM) series.