EC-21 multi • EC-26 multi Portable Multi Meter

An elegant and ergonomic case, with a practical soft rubber and IP57 protection, contains the best of current technology. A large display (3-color backlit for EC-26multi) shows all information that you need.

All the functional parameters of connected electrode, during measurement or calibration, are constantly checked and inform the operator for easy trouble-shooting. The new DHS-technology allows the use of digital as well as analog electrodes.
Only 4 keys (6 for EC-26multi) allow the user to control all functions in an intuitive and easy way.



PI logo

All features at a glance

• Display of pH/mV/Conductivity/TDS
and Temperature parameters


• Selectable resolution: 0,1/0,01 pH
• DHS-function, automatic recognition
of DHS- and analog electrodes
• Automatic calibration up to 3 points
with 2 selectable pH-buffer sets
(USA and NIST)
• Manual calibration up to 2 points
with User-defined pH-Buffer
• Stability parameter (Low-Med-High)
for high accuracy measurement


• Automatic calibration from 1 to 4 points
between 4 conductivity standard values
• Manual calibration at 1 point (User defined)
• Automatic and manual compensation
of temperature with reference
value 15…30 °C
• Large Display with indication of
standards used for calibration
and stability
• Waterproof IP57 protection

Technical dataEC-21 multiEC-26 multi
Measuring Range (pH)0,00…14,00-2,00 … 16,00
Measuring Accuracy (pH)0,1/0,010,1/0,01
Buffer solutions1…3 /USA, NIST, DIN, User1…3 /USA, NIST, DIN, User
Calibration points1…31…3
Meas. Range(Cond-mS)0,00…2000,00…200
Measuring Accuracy (Cond)0,1/1 µS 0,01/0,1 mS0,1/1 µS 0,01/0,1 mS
Calibration points1…51…5
Selectable cell constant (cm¯1)0,1 – 1 – 100,1 – 1 – 10
Temperature measuring range0.0…100-10 – 110
Resolution/Accuracy0,1 / ± 0,5°C0,1 / ± 0,5°C
TTDS Measuring range0.1 mg/l…200 g/l0.1 mg/l…200 g/l
Calibration alarmNoYes
MemoryNo1000 data
InterfaceNoMicro USB
IP-classIP 57IP 57
Dimension185 x 85 x 45 mm185 x 85 x 45 mm
Weight400 g400 g
Warranty3 years3 years