SevenCompact™ pH/Ion

ML1503 with Arm
Its not just an ordinary pH meter.
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Its not just an ordinary pH meter, it can also measure ORP and ion-concentration in various units. Switching modes before, during or after measurement is easy requiring just a single keypress.

Pressing a single button – READ or CAL – starts a measurement or calibration, with three options for endpointing. With a timed endpoint the analysis endpoints after a pre-defined time interval. It can also be endpointed manually or the instrument can automatically endpoint according to one of three stability criterion: fast, normal or strict.

Features and Benefits

pH calibration support Eight different pre-defined pH buffer groups are available giving you a high degree of flexibility. It is also possible to create your own buffer group. After calibration, the sensor icon shows you at a glance the quality of the calibration.
Ion measurements – flexible sensor choice It is possible to use our perfectION™ Series of combined Ion Selective Electrodes as well as our collection of half-cells. For measurements with half-cell sensors a reference electrode connection is present.
Full ion support The eight most commonly used ion types are pre-programmed to make the settings as convenient as possible. For others, you can enter generic ions with different ionic charges to ensure that the slope is calculated correctly.
Temperature – an important parameter Supports both NTC30kΩ and Pt1000 temperature sensors, with the option of automatic detection or manual selection. Three options for temperature capture exist: an integrated temperature sensor in the electrode, an external temperature sensor or setting the temperature manually.
Specifications - ML1503 SevenCompact™ pH/Ion
Short description pH/Ion meter 
pH-range -2.000 to 20.000
pH-resolution 0.001 / 0.01 / 0.1
pH-relative accuracy 0.002
mV* range -2000.0 to 2000.0
mV* resolution 0.1 / 1
mV* accuracy 0.2
Ion concentration** range 1.00E-9 to 9.99E+9
Ion concentration** resolution last signifi. digit
Ion concentration** accuracy 0.5%
Temperature*** range C -30.0 to 130.0
Temperature*** resolution C 0.1 
Temperature*** accuracy C 0.1 
Calibration Max. 5 points, 8 pre-defined & 1 user-defined buffer group
System Date / time, PIN-protection, 10 languages
Data storage 1000 measurements
Data export USB stick, LabX direct PC software
Measurement limits User-definable with warning message
ID entry User ID, Sample ID, Sensor ID, Sensor Serial Number
ISM Intelligent Sensor Management supported
* Instrument can also measure rel. mV
** Ion concentration supports units mmol/L, mol/L, ppm, mg/L, % and pX
*** Temperature display choice between C and F. ATC temperature range is -5,0 to 130,0 C


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