Versatile and robust routine pH/Ion benchtop meter with a compact design to save space while providing precise, intuitive measurements

SevenCompact S220-Kit

Truly intuitive operation

Initiating a calibration or measurement needs only a single keypress. Menu settings are intuitive, including complete sentences in 12 languages.

High-resolution color display

The 4.3″ color display with its well-arranged icons and huge digits enables relevant data to be identified at a glance.

All-round productivity from the start

The strong and reliable sensor In Lab Expert Pro-ISM has been developed to measure samples with the most extensive properties.



Parameter pH
Channel Single-channel
Version kit Ready-to-measure kit
Sensor InLab Expert Pro-ISM
pH measuring range -2 – 20
pH resolution 0.001
pH accuracy (±) 0.002
Ion concentration measuring range 1.00E-9 – 9.99E+9
Ion concentration resolution 3 or 4 digits (auto)
Ion concentration 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)


Automatic buffer recognition

The automatic buffer recognition system enables users to select the order in which buffers should be utilized while calibrating. Thus, users can rapidly run their regular calibrations without redundant error messages.

Two display layouts

Users can switch between the full-information screen and the uFocus™ layout by a single keypress. Thus, they will not be distracted by less significant data.

Connectivity and peripherals

RS232 and USB interfaces enable users to link several peripherals from METTLER TOLEDO at the same time, thus increasing the possibilities of users’ instruments.

IntelligentSensor Management (ISM®)

ISM® helps prevent errors by automatic recognition of the sensor upon connection and guarantees that the latest calibration is utilized for future measurements.