The Flexcell for the Measurement of the Critical Pitting Temperature

The Flexcell™, used to determine the Critical Pitting Temperature, is designed to counteract a problem that plagues most other flat sample designs -- crevice corrosion around the specimen seal. First popularized by Avesta Steel, the cell utilizes a flooded gasket seal design to inhibit crevice corrosion between the sample and its holder.  This simple yet elegant design results in an easy to use, reliable, crevice free system.

The main body of the cell is a two piece construction that allows for easy handling and assembly. Specimens are mounted facing upwards, allowing for close but unobtrusive placement of a temperature probe and reference electrode. The Flexcell™ is heated externally with a wrap-around heater. An internal Teflon-coated copper coil allows for chilling the temperature of the the cell using externally cooled water.

A motor-driven stirrer is also available for the Flexcell.

CPT FlexcellFlexcell components were selected to be as chemically inert as possible.  In normal use, the only materials in contact with the test solution are glass, filter paper, and TFE Teflon™.  The Flexcell is therefore usable with a wide variety of test solutions, including nonaqueous media.

 When used in conjunction with the CPT110 Critical Pitting Temperature software and a TDC4 Temperature Controller or any other lab grade precision temperature controller, the system becomes a very useful and powerful tool for studying localized corrosion. In the tradition of Gamry, the Flexcell™ can be used out of the box or adapted to meet your needs.

Click here to view a cross section of the Flooded Gasket Seal.
 

Flexcell Specifications

Metal Specimen

Active Area

0.775 square inches ( nominal )
5.0 cm2 ( nominal )
 

Minimum Size

4.0 cm x 4.0 cm
4.0 cm diameter ( circular )
 

Maximum Size

7.5 cm x any length or
11.0 cm x 11.0 cm ( rectangular )
11.0 cm diameter ( circular )


Vessel Dimensions

Volume

1000 ml ( minimum )
1300 ml ( maximum )
 

Inner Diameter

10 cm ( nominal )


Temperature Range

Operating

-25șC to 140șC

Storage

-40șC to 180șC ( not assembled )


Chemical Compatibilty

Wetted Materials

Pyrex™, Teflon™, Filter Paper

Non-Wetted Materials

Above, plus stainless steel, Viton™, silicone rubber

Parts

The Flexcell™ is shipped with all the accessories required to run tests except for these items which are subject to unique customer request.

  • No metal samples are supplied.

  • A reference electrode is not included 

 

Warranty

Gamry Instruments  warrants to the original user of this product that it shall be free of defects resulting from the faulty manufacture of the product or its components for a period of one year from the shipment date of your purchase.



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Last revised on Tuesday, July 20, 2010