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Assembly--Inserting the Sample Holder into the Cell

16

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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. By turning the nut so that it presses against
the top of the cell, you can easily remove the adapter, no matter how deeply it is in the cell top.

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Summary of Contents for MultiPort

Page 1: ...MultiPort Electrochemical Cell Kit Operator s Manual...

Page 2: ...y obligation to install same on systems previously purchased All product specifications are subject to change without notice There are no warranties which extend beyond the description herein This war...

Page 3: ...nc 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 Disclaimer The information in this manual ha...

Page 4: ...iv...

Page 5: ...MultiPort Cell Kit Operator s Manual Copyright 2017 Gamry Instruments Inc Revision 1 41 November 30 2017 988 00013...

Page 6: ......

Page 7: ...ral Information 7 Main Cell Assembly 9 Bridge Tube and Reference Electrode 11 Counter Electrode 11 Gas flow Overview and Terminology 11 Pre saturation of the Purge Gas 12 Gas Dispersion Tube 12 Attach...

Page 8: ...ts required functions You can customize the cell by rearranging some of Gamry s standard fittings or making or buying additional fittings electrodes sensors or adapters Too often temperature control i...

Page 9: ...Introduction Checking for Shipping Damage 3...

Page 10: ...the polyethylene stoppers used to seal the unused port makes them easily adaptable as a vent for purge gas you simply poke a hole in the flat surface of the stopper While they provide chemical resista...

Page 11: ...f shipping damage Be especially careful if the shipping container shows signs of rough handling Obviously the glass pieces are the most susceptible to damage Check the glass pieces for chipping and sm...

Page 12: ...1 935 77 PTFE encapsulated silicone O ring for flange 1 930 55 Reference Electrode Bridge tube with glass frit tip incl 11 bushing with O ring 1 930 50 Adapter SJ28 to 7 with bushing and O ring 1 935...

Page 13: ...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...

Page 14: ...signed to be tightened with finger pressure only Pay careful attention to cell cleanliness In many corrosion testing situations contaminants in the cell and test solution are not a problem if you take...

Page 15: ...the flange then fit and secure the clamp on the hooks and push the bar back to bring the ends together If necessary the clamp can be loosend or tightened either by fingers or using a flat head screwdr...

Page 16: ...Assembly Main Cell Assembly 10 Figure 2 Main Cell Assembly...

Page 17: ...Tube Counter Electrode The Counter Electrode is a rod of very high density graphite To fit the counter electrode to the cell first roll on one of the small black washers With the washer on feed the c...

Page 18: ...tal signal that is intended to control a solenoid valve which in turn routes gas flow to the cell Gamry s VistaShield Faraday cage when equipped with a Purge and Stir option provides a complete soluti...

Page 19: ...l hole poked into one of the polyethylene stoppers in the cell kit is generally a sufficient vent If you do not have a three way gas control valve you can switch from purge mode to blanket mode manual...

Page 20: ...ether the assembly loosely before tightening the Hex Standoff Consult the diagram in Figure 5 for the position of the Sample Holder components The centering washer has a small protrusion on one surfac...

Page 21: ...nd Centering Washer should easily pass through the adapter 4 Leave approximately 8 cm of the of the glass tube extending below the adapter When you have the tube at the desired position tighten the sm...

Page 22: ...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 o...

Page 23: ...as a water pipe will reduce noise in your experimental results If you are measuring very small currents you may find that a metal enclosure completely surrounding your cell will further reduce noise I...

Page 24: ...rate of almost all chemical reactions is strongly temperature dependent For this reason you might want to either measure or control the temperature of your cell Many thermometers will fit the standard...

Page 25: ...Customizing Your Cell Getting a Stir Bar into the Cell 19...

Page 26: ...Selected Specifications Cell Volume 1000 mL standard operating volume Port Type 24 40 standard taper 15 28 socket 7 glass thread Number of Ports 3 1 3 Working Electrode Threaded Hole US 3 48 Coarse T...

Page 27: ...trode Another common problem is two electrodes shorting together coming into mutual electrical contact This can occur within the cell especially with a bare wire counter electrode It can also occur be...

Page 28: ...o be resurfaced or replaced Noisy Cell Current overloads may be present Your de oxygenation gas is still bubbling through the solution You have a high impedance in the reference electrode path There i...

Page 29: ...ctions 17 Faraday cage 17 gas dispersion tube 11 green and blue cell leads 17 ground glass joints 7 jacketed 2 leaks 15 nitrogen 12 noise 17 parts list 6 polyethylene 4 problems iii red cell leads 17...

Page 30: ...Index Poor Experimental Reproducibility 24 734 Louis Drive Warminster PA www gamry com...

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