Gamry Instruments MultiPort, Руководство оператора

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Assembly--General Information
7
Assembly
This section of the manual tells you how to assemble the kit ’ s components into a complete MultiPort Cell. The
descriptions are based on a “ standard ” cell configuration consisting of a cylindrical-metal sample working
electrode, a graphite-rod counter electrode, a single-junction reference electrode in a reference bridge tube,
and a gas dispersion tube.
Your kit was shipped to you with one C1018 mild-steel metal sample. Use this sample to try out the assembly
of your cell as you read this section of the manual.
Feel free to customize your cell configuration. You are only limited by your imagination and the number and
size of the ports available on the top of the cell.
General Information
A diagram of an assembled cell is shown in Figure 1. The basic setup makes use of four of the seven available
ports (five of the seven ports are clearly visible in the figure). A more detailed diagram of the working-electrode
assembly is shown in Figure 2.
If you are assembling your MultiPort Cell for the first time, you may want to assembly the entire cell dry first.
After you are comfortable with the cell
’ s assembly, you can fill the cell with a test solution and run real tests.
Three of the ports on the cell top are 24/40 ground-glass female joints, one is a 15/28 ground-glass female ball
joint, and the other three are #7 glass thread joints. The central (24/40) port is used for the Sample Holder (the
Working Electrode). The ball joint is intended for use with the included adapter and bridge tube for the
reference electrode. The included gas dispersion tube (bubbler) fits either of the remaining 24/40 joints, and the
counter electrode is intended for one of the #7 glass thread joints.
The base of the MultiPort is flat. The cell can stand up on a lab bench as long as it is not subject to accidental
jostling. If you are concerned that it might be knocked over, clamp the cell to a ring stand, available from
laboratory supply houses.
Caution:
The cell can be damaged and valuable data can be lost if the cell topples over.
Ensure that the cell is stable on your work surface.
Caution:
In vacuum work in a chemical laboratory, ground-glass joints are often greased.
This is unnecessary with the MultiPort, and may even cause problems if the grease gets into the test solution
or on an electrode.
Never grease any of the ground-glass joints on your MultiPort.