Benchtop pH Meters from Simple to Sophisticated Lab Applications

Benchtop pH Meter

Single- and Multi-Channel Solutions for your Laboratory

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Please choose the Benchtop pH Meter Line that suits you best:

Benchtop pH Meter
SevenDirect Advanced pH Meter Line
Benchtop pH Meter

SevenExcellence pH Meter Line

SevenDirect Advanced pH Meter Line

FiveEasy Standard pH Meter Line

Professional, high performance meter based on intuitive touchscreen operation, for safe results and solid compliance - up to three measurement channels.
SevenDirect benchtop meters are intuitive to use and offer GLP support.They provide accurate pH, ion concentration, and conductivity measurements.
Basic and handy meter ideal for anyone working on a tight budget, who nevertheless requires rapid and reliable results.
Benchtop pH Meter

Professional, high performance meter based on intuitive touchscreen operation, for safe results and solid compliance - up to three measurement channels.

SevenDirect Advanced pH Meter Line

SevenDirect benchtop meters are intuitive to use and offer GLP support.They provide accurate pH, ion concentration, and conductivity measurements.

Benchtop pH Meter

Basic and handy meter ideal for anyone working on a tight budget, who nevertheless requires rapid and reliable results.

Please choose the Benchtop pH Meter Line that suits you best:

Benchtop pH Meter
SevenDirect Advanced pH Meter Line
Benchtop pH Meter

SevenExcellence pH Meter Line

SevenDirect Advanced pH Meter Line

FiveEasy Standard pH Meter Line

Professional, high performance meter based on intuitive touchscreen operation, for safe results and solid compliance - up to three measurement channels.
SevenDirect benchtop meters are intuitive to use and offer GLP support.They provide accurate pH, ion concentration, and conductivity measurements.
Basic and handy meter ideal for anyone working on a tight budget, who nevertheless requires rapid and reliable results.
Benchtop pH Meter

Professional, high performance meter based on intuitive touchscreen operation, for safe results and solid compliance - up to three measurement channels.

SevenDirect Advanced pH Meter Line

SevenDirect benchtop meters are intuitive to use and offer GLP support.They provide accurate pH, ion concentration, and conductivity measurements.

Benchtop pH Meter

Basic and handy meter ideal for anyone working on a tight budget, who nevertheless requires rapid and reliable results.

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FAQ

Should I have a dedicated or a multi-parameter instrument?

This depends on your application. Dedicated single channel meters can be used to measure one parameter like pH, ORP, ion concentration, conductivity, or dissolved oxygen). Multi-parameter instruments allow you to measure more than one parameter at the same workplace.

What is the difference between linear and segmented calibration?

Please see the above graphs showing the difference between linear and segmented calibration modes.

After performing a segmented calibration with three buffers, two slope and two offset values are given. When performing a linear 3 point calibration, you get only one slope and one offset value based on the line drawn by linear regression (fitted using the least squares approach) between all 3 calibration points.

The difference between these two methods is that the segmented calibration is considered to be more accurate, because it fits more the real behavior of an electrode than just one line.

When performing a measurement after a segmented calibration, the instrument takes the slope and offset according to the pH value measured. For example, if the measured value is pH 5, the slope/offset values between pH 4.00 & pH 7.00 will be used. If the measured value is pH 9, the slope/offset between pH 7.00 & pH 10 will be used.

When performing a measurement after a linear calibration, in case of measured pH 5 and pH 9, the same slope value is used for calculation.

Know the Risk of Your pH Measurement
Ion Selective Electrode Guide – Theory and Practice
How to Measure pH in Small Samples
pH Toolbox for Life Sciences
pH Theorie Guide