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Gamry Instruments MultiPort Operator's Manual

Electrochemical cell kit
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MultiPort
Electrochemical Cell Kit
Operator's Manual

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Summary of Contents for Gamry Instruments MultiPort

  • Page 1 MultiPort Electrochemical Cell Kit Operator’s Manual...
  • Page 2 Limited Warranty Gamry Instruments, Inc. warrants to the original user of this product that it shall be free of defects resulting from faulty manufacture of the product or its components for a period of one year from the original shipment date of your purchase.

  • Page 3: If You Have Problems

    (877) 367-4267 Toll-free US & Canada Only Replacement parts for this kit are available from Gamry Instruments, Inc. Do not ask us to supply metal samples in materials other than C1018 Mild Steel. See the Introduction section of this manual for a source of metal samples.
  • Page 5 MultiPort Cell Kit Operator’s Manual Copyright  2017 Gamry Instruments, Inc. Revision 1.41 November 30, 2017 988-00013...

  • Page 7: Table Of Contents

    If You Have Problems ........................iii Disclaimer ............................. iii Copyrights and Trademarks ......................iii Introduction ........................... 2 Chemical Compatibility of the MultiPort Cell Kit ................4 Unpacking and Checking Your MultiPort Cell Kit ................5 Checking for Shipping Damage ..................5 Parts List ........................... 6 Assembly ............................

  • Page 8: Introduction

    For these reasons, Gamry sells a special jacketed version of the MultiPort cell body. When this cell is connected to a circulating water bath, accurate temperature control of your experiments becomes possible.
  • Page 9 Introduction--Checking for Shipping Damage...

  • Page 10: Chemical Compatibility Of The Multiport Cell Kit

    Chemical Compatibility of the MultiPort Cell Kit--Checking for Shipping Damage Chemical Compatibility of the MultiPort Cell Kit The components in the MultiPort Cell Kit were selected to be as chemically inert as possible. In normal use, the only materials in contact with the test solution are: •...

  • Page 11: Unpacking And Checking Your Multiport Cell Kit

    Unfortunately, no matter how carefully glass pieces are packaged, damage sometimes occurs. When you first receive your MultiPort Cell Kit, please check it for any signs of shipping damage. Be especially careful if the shipping container shows signs of rough handling.

  • Page 12: Parts List

    Please check the contents of your kit versus the Corrosion Cell packing list in Table 1. When shipped, all of the Corrosion Cell Kit components should be labeled with their Gamry Instruments, Inc. part number. If you are checking the completeness of an older kit, you can identify the components by name using the illustrations in Figures 1 and 2 later in this manual.

  • Page 13: Assembly

    Never grease any of the ground-glass joints on your MultiPort. 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.
  • Page 14 Figure 1 Assembled Cell: Standard (left) and Jacketed (right) Versions The MultiPort includes a number of ACE-Thred™ connectors used for a wide variety of functions. #7 ACE- Thred™ connectors are particularly common. ACE-Thred™ fittings are designed to seal cylindrical objects into the cell.

  • Page 15: Main Cell Assembly

    6.5 mm and 7.5 mm. If you need to add non-standard options to your MultiPort kit, make sure you are aware of this restriction, for this joint type is two of the three “spare”...
  • Page 16 Assembly--Main Cell Assembly Figure 2 Main Cell Assembly...

  • Page 17: Bridge Tube And Reference Electrode

    The graphite rod that is shipped with your MultiPort Cell Kit is spectroscopic grade. It is very pure and is therefore unlikely to be a significant source of contamination in your initial experiment. However, the rod is somewhat porous and can adsorb substances present in your test solution.

  • Page 18: Pre-Saturation Of The Purge Gas

    Gas Dispersion Tube In the MultiPort, gas-flow control is via a gas dispersion tube that fits a 24/40 standard taper. At Gamry, we often refer to the gas bubbler assembly as a three-way adapter, because it can be used to implement three functions: purge, blanket and vent.

  • Page 19: Attaching Gas Tubing To The Cell

    If you use purge of blanket gas, you must provide a vent for the gas to escape the cell. The MultiPort was not designed to withstand gas pressure! Failure to vent the cell can cause damage to the cell, uncontrolled loss of electrolyte from the cell, and risk of personal injury to the cell’s operator.
  • Page 20 Assembly--Sample Holder Assembly Take great care to insure that the surface of your test sample is not altered prior to the test. Avoid contacting the sample with your fingers. You may want to degrease the metal sample mounted on the Sample Holder just prior to starting your test. Sample surface finish and other sample preparation are critical if you want to obtain reproducible results.

  • Page 21: Inserting The Sample Holder Into The Cell

    Assembly--Inserting the Sample Holder into the Cell Figure 5 Sample Holder Assembly (pictured with 24/40 port adapter) Inserting the Sample Holder into the Cell 1. Place the assembled Sample Holder into the 8 mm PTFE-tubing adapter. 2. Loosen the smaller of the two knurled nuts on the adapter. 3.
  • Page 22 Assembly--Inserting the Sample Holder into the Cell • A damaged PTFE Compression Gasket • A scratch or other imperfection in the sealing surface on the sample • A chip on the end of the Glass Tube The larger knurled nut on the adapter is used when it is time to remove the adapter. Without this nut, it is difficult to grab the adapter firmly enough pull it out of the Cell Top.

  • Page 23: Electrode Connections

    The Reference Electrode lead plugs into the white pin jack on the cell cable. The green and blue leads from the cell cable are attached to the Working Electrode. Cell currents in a MultiPort experiment are often large enough that you should clip the blue and green leads separately to the working electrode.

  • Page 24: Customizing Your Cell

    Customizing Your Cell The MultiPort was designed to have options available even while fully accommodating the ASTM G5 standard. There are seven total ports and only three or four necessary for most experiments (five or six for full ASTM G5 compliance with opposed counter electrodes and a thermometer or temperature probe).
  • Page 25 Customizing Your Cell--Getting a Stir Bar into the Cell...

  • Page 26: Selected Specifications

    Selected Specifications--Getting a Stir Bar into the Cell Selected Specifications Cell Volume 1000 mL standard operating volume Port Type 24/40 standard taper 15/28 socket #7 glass thread Number of Ports Working Electrode Threaded Hole US 3-48 Coarse Thread Area under Gasket 0.03 in.

  • Page 27: Troubleshooting

    Troubleshooting--Very small current or no current when you run an experiment but no overload indication Troubleshooting By far, the most common source of problems is lack of a connection between a cell lead and the cell electrolyte. The lack of connection can be between the potentiostat and the electrode, or between the electrode and the electrolyte.
  • Page 28 Troubleshooting--Full-scale current and voltage when you run an experiment, many overloads • If your cell includes a counter-electrode isolation tube, it is not filled with electrolyte. Stop the experiment, fix the error, and restart. The working electrode is not damaged. Full-scale current and voltage when you run an experiment, many overloads •...

  • Page 29: Index

    Index--Poor Experimental Reproducibility Index Alabama Specialty Products, 2 basic, 4 cage, 17 cell connections, 17 chemical, 4 circulating, 2 damage, 5 deaeration, 12 electrode connections, 17 Faraday cage, 17 gas dispersion tube, 11 green and blue cell leads, 17 ground glass joints, 7 jacketed, 2 leaks, 15 nitrogen, 12...
  • Page 30 Index--Poor Experimental Reproducibility 734 Louis Drive, Warminster, PA www.gamry.com...

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