Pot 16 & Pot 16 Mono Cell Print E-mail
Image Pot 16

Ideal for ASTM G42 & ASTM G8
Cathodic Protection
Coating Disbondment
Metal Leeching
Quality Control
Standard Tests

16 Potentiostats
350mA per Channel
High Impedance RE
Fixed Potentials
Very Stable
Measure Current
Measure RE 


Long term testing at fixed potentials is vital in many branches of corrosion, coatings, Cathodic protection and electrochemistry. This is why our Pot 16 is one of our most popular instruments and boasts big name users such as Bredero Shaw. The Pot 16 offers 16 individual potentiostats (number of channels can be determined by your needs). Each channel has a fixed current measurement range, selected on purchase for the type of testing to be performed. The standard range is 350mA with a resolution of 5μA.

A single dialled knob is fitted as standard, to allow a wide range of potential to be selected for all channels. Additional dialled knobs may be specified to allow different potentials on groups of channels. In some cases a variable potential is not desirable, in which case switches may be specified to allow selection between fixed potentials e.g. -1.5V & -3V 

Alternatively up to 4 fixed potentials may be ordered and allocated between the 16 channels at no extra cost. For example channels 1 to 8 could be set to -1.5 V, channels 9 to 11 set to -3 V, channel 12 to 14 set to -3.5 V and 15 to 16 set at -4 V. These potentials are set on internal 25 turn trimming potentiometers.

To increase the value of these tests both current and voltage are monitored and stored using very high accuracy internal voltmeters. The voltage should stay constant at the set potential but if this is not the case it is usually an indication of problems with the cell (for example a bubble in the Luggin probe).

The Pot 16 can easily be customised to the customers specifications. Higher current output, more channels, waterproof enclosure, alternative connectors and battery powered option are all possible. 

ACM Instruments Pot range are available in configurations suitable for most standard Cathodic Disbondment tests including but not limited to ASTM G8, ASTM G42, ASTM G80, ASTM G95, CSA Z-245, EN 10289, ISO15711, AS-3862, AS/NZS4352, NF A 49-711, DIN 30 671, AWWA C-210, API RP 5L7, 09-amss-089 ARAMCO, ARCO China, NF A49-711 and NF A49-716.

All ACM instruments come with a two year warranty which may, at low cost, be increased to five years for peace of mind.

You may also be interested in the Cathodic Disbondment Test Cell

[Pot 16 datasheet]

Isolated Pot 16

Isolated Pot 16 has the same specifications as the Pot 16, but each channel is isolated allowing samples to be in the same solution. 


Pot 16 Mono Cell

The Pot 16 Mono Cell is able to perform Cathodic Disbondment tests on up to 16 test electrodes in the same test tank. The instrument is capable of monitoring the individual current response from each of the 16 electrodes. Each of the 16 channels can be operated as if they are individual channels and switched off or on as required, thus enabling new tests to run alongside tests that have already been running for several weeks.

The polarisation potential is set via a ten turn dialled knob on the front panel that controls the global polarisation potential of all 16 electrodes between 0 to -5V. In other respects the Pot 16 Mono Cell is the same as for the standard Pot 16.

Running 16 channels in a single test cell has some advantages in that it is easier to run a single test cell and periodically replace some of the test solution.


Pot 16 Quad

The Pot 16 Quad has four 800mA potentiostats and sixteen 200mA ZRAs in a 4x4 arrangement. This allows up to sixteen samples to be tested in one cell or four samples each in four cells. Each potentiostat has its own -5V to +5V ten turn dialled knob allowing independent adjustment and as with all the Pot 16 based instruments the polarisation is maintained without software control.

As with all our instruments these specifications can be tailored to meet your individual requirements.

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