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Conductivity/Resistivity/TDS Meters and Testers

Conductivity/Resistivity/TDS Meters and Testers

Cole-Parmer offers a wide range of conductivity meters and conductivity controllers for a variety of environments and applications. Our low cost pocket conductivity testers and portable conductivity meters are ideal for field based conductivity measurement. Many models have an onboard memory to store and recall conductivity readings taken. For laboratory based applications, select from benchtop conductivity meters including leading brands such as Oakton, YSI, and Thermo Orion. Features of this style of conductivity meter can include a computer interface either by RS-232 or USB. Speak to our Applications Specialists for free technical support on conductivity measurement to help solve your application needs.

When considering features for a conductivity meter it is important to first understand how conductivity measurements are made. Conductivity is the ability of a material to conduct electric current. Determination of conductivity is achieved by the instrument by placing two plates in the sample, applying a potential across the plates and measuring the current that passes through the solution. Conductivity, the opposite of resistivity, is determined from the voltage and current values according to Ohm’s Law.

Conductivity Meter & Measurement Selection Considerations

When selecting a conductivity meter important features that need to be considered are :

  • Autoranging: Meter automatically selects the most accurate range for measurement. There is no need to manually change the range.
  • TDS Conversion Factor: When a solution does not have a similar ionic water content to natural water or salt water, then a TDS conversion factor is needed to automatically adjust the TDS readings
  • Temperature Compensation: A cell with built-in temperature sensor allows the meter to make adjustments to the conductivity or TDS reading based on changes in solution temperature
  • Adjustable temperature coefficients: Alcohols and pure water are affected by changes in temperature differently than typical samples. An adjustable temperature coefficient allows the user to compensate for the properties of the measured solution
  • Adjustable cell constant: Adjusts the measurement to reflect use of a cell with a constant other than K = 1.0. Wide range meters may except cells between K = 0.01 and 10
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 Product Detail
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EW-19401-12 MYRON L 4PII Waterproof Conductivity/TDS/Resistivity Meter

MYRON L 4PII Waterproof Conductivity/TDS/Resistivity Meter

Meter style Portable,Temperature compensation Automatic,Display LCD
EW-19401-12
In stock.
$788.00 USD/EACH

Qty:

EW-35411-00 Oakton<small><sup>&reg;</sup></small> CON 700 Meter w/probe & stand

Oakton Benchtop CON 700 Meter with Probe and Stand

Meter style Benchtop,Temperature compensation Automatic or manual,Display LCD
EW-35411-00
In stock.
$638.00 USD/EACH

Qty:

EW-35604-00 Oakton<small><sup>&reg;</sup></small> CON 6+ handheld conductivity meter with probe

Oakton CON 6+ handheld conductivity meter with probe

Meter style Portable,Temperature compensation Automatic or manual,Display LCD
EW-35604-00
In stock.
$345.00 USD/EACH

Qty:

EW-35462-10 Oakton EcoTestr TDS Low pocket TDS tester

Oakton EcoTestr TDS Low pocket TDS tester

Meter style Tester,Temperature compensation Automatic,Display LCD
EW-35462-10
In stock.
$60.00 USD/EACH

Qty:

Representative photo only MYRON L EP 10 Analog Conductivity Meter

MYRON L EP-10, Analog Conductivity Meter

Meter style Portable,Temperature compensation Automatic,Display Analog
EW-01489-35
In stock.
$397.50 USD/EACH

Qty:

EW-35607-40 Oakton<small><sup>&reg;</sup></small> CON 11 handheld conductivity/TDS meter

Oakton CON 11 handheld conductivity/TDS meter

Meter style Portable,Temperature compensation Automatic or manual,Display LCD
EW-35607-40
$488.00 USD/EACH

Qty:

Representative photo only Oakton ECTestr 11 multi range cup style pocket conductivity tester

Oakton ECTestr 11+ multi-range, cup-style pocket conductivity tester

Meter style Tester,Temperature compensation Automatic,Display LCD
EW-35662-35
In stock.
$112.00 USD/EACH

Qty:

Representative photo only Oakton ECTestr 11 dual range pin style pocket conductivity tester

Oakton ECTestr 11 dual-range, pin-style pocket conductivity tester

Meter style Tester,Temperature compensation Automatic,Display LCD
EW-35662-30
In stock.
$83.00 USD/EACH

Qty:

Representative photo only MYRON L 532T1 Analog Total Dissolved Solids Meter

MYRON L 532T1, Analog Total Dissolved Solids Meter

Meter style Portable,Temperature compensation Automatic,Display Analog
EW-01489-25
In stock.
$364.50 USD/EACH

Qty:

Representative photo only Oakton TDSTestr 11 dual range pin style pocket TDS tester

Oakton TDSTestr 11 dual-range, pin-style pocket TDS tester

Meter style Tester,Temperature compensation Automatic,Display LCD
EW-35662-10
In stock.
$83.00 USD/EACH

Qty:

EW-19707-05 MYRON L TechPro II<small><sup>&#153;</sup></small> TP1 conductivity/TDS meter

MYRON L TechPro II TP1 conductivity/TDS meter

Meter style Portable,Temperature compensation Automatic,Display LCD
EW-19707-05
In stock.
$675.00 USD/EACH

Qty:

Representative photo only Oakton CON 6 handheld conductivity meter kit

Oakton CON 6+ handheld conductivity meter kit

Meter style Portable,Temperature compensation Automatic or manual,Display LCD
EW-35604-04
In stock.
$390.50 USD/EACH

Qty:

Representative photo only Oakton Benchtop CON 2700 Meter with Probe and Stand

Oakton Benchtop CON 2700 Meter with Probe and Stand

Meter style Benchtop,Temperature compensation Automatic or manual,Display LCD
EW-35412-00
In stock.
$918.00 USD/EACH

Qty:

Representative photo only MYRON L EP analog conductivity resistivity meter

MYRON L EP analog conductivity/resistivity meter

Meter style Portable,Temperature compensation Automatic,Display Analog
EW-01489-30
In stock.
$410.50 USD/EACH

Qty:

EW-35462-50 Oakton EcoTestr Salt pocket salinity tester

Oakton EcoTestr Salt pocket salinity tester

Meter style Tester,Temperature compensation Automatic,Display LCD
EW-35462-50
In stock.
$69.00 USD/EACH

Qty:

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