SevenCompact Duo S213-Kit from METTLER TOLEDO

Versatile and robust routine dual channel pH and conductivity benchtop meter with a compact design to save space while providing precise, intuitive measurements.

SevenCompact Duo S213-Standard Kit, pH/Cond dual channel benchtop meter with InLab Expert Pro-ISM and InLab 731-ISM.

A Reference for Intuitive Operation

Only a single keypress is required to start a measurement or calibration. Menu settings are intuitive, comprising complete sentences in 12 languages.

IP54 Design for Long-Lasting Investment

SevenCompact’s sturdy design warrants a long-lasting investment. Complete service ensures smooth operation even several years post installation.

Useful Accessories for Significant Flexibility

Different accessories such as barcode reader, USB printer, USB stick, keyboard, or a PC can be connected with EasyDirect™ pH to improve SevenCompact’s versatility.



Parameter pH
Channel Dual-channel
Version kit Ready-to-measure kit
Sensor InLab Expert Pro-ISM
InLab 731-ISM
pH measuring range -2 – 20
pH resolution 0.001
pH accuracy (±) 0.002
Conductivity measuring range 0.001 μS/cm – 1000 mS/cm
Conductivity resolution 0.001 – 1
Conductivity accuracy (±) 0.5 %
mV measuring range 0
mV resolution 0.1
mV accuracy (±) 0.1
Temperature Range -30 °C – 130 °C
Temperature Resolution 0.1 °C
Temperature accuracy (±) 0.1 °C
Portable No
Security and compliance GLP
Password protection
User management
ISM support Yes
Memory size 1.000 measurements
Data Transfer PC
USB stick
Flexibilty and modularity Barcode reader
Protection Rating Watertight and dustproof (IP54)



Dual Channels Measure pH and Conductivity

Whether quantifying pH and conductivity simultaneously or independently, the meter toggles the display with just a single keypress. All inputs are galvanically secluded from each other, thus enabling uninterrupted measurement in the same beaker.

All-Round Productivity from the Start

The Standard kit comprises two sturdy and dependable sensors. The InLab Expert Pro-ISM has been engineered for measuring samples with various properties, and the 4-pole graphite cell InLab 731-ISM is an all-rounder for a broad range of conductivity values.

Ready for the Future with Digital Input

The SevenCompact™ Duo S213 can handle both digital and analog pH and conductivity sensors, making it a futuristic instrument.

High-Resolution Color Display

Thanks to its large font size and well-organized icons, the 4.3-inch color display enables identifying appropriate data at a glimpse.

Flexible and Quick Calibration

The automatic buffer recognition system prevents calibration with the incorrect buffer. There are 8 predefined buffer sets for pH and 13 predefined standards available for conductivity. This saves users’ time and helps prevent errors.

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