High resolution, high precision, simple, menu-driven operation. Even in poor lighting conditions the backlit graphics display provides clearly readable values. With a data logger, memory for 1,800 data sets and a real-time clock support GLP requirements.
Includes built-in NiMH rechargeable battery for up to 1,000 hours of continuous measurements, and appropriate AC adaptor.

This waterproof (IP 66) instrument with battery or optional line adaptor also meets the requirements of IP 67 and is optimally suited for use in the field, in laboratories or at production sites. Simultaneous connection of a pH/ORP electrode and a dissolved oxygen sensor or conductivity cell allows up to three parameters (including temperature) to be measured at the same time.

Additional features include:

• Up to 2500 hours continuous operation
• Easy-to-use
• Complete set available

Multi 3400i SET:

• Multi-parameter instrument Multi 3400i
• Professional case with built-in measuring set-up, two STH 320 stands, two beakers, SM 325 protective armor and carrying strap with two cases
• Calibration and maintenance supplies, operating instructions

Additional features include:

• Up to 2500 hours continuous operation
• Easy-to-use
• Complete set available
• pH/Oxi 3400i SET, Kit includes:
  Professional case with sample beakers included, pH/Oxi 3400i, pH electrode and dissolved oxygen, STH 320 stand and calibration and maintenance supplies
• pH/Cond 3400i SET, Kit includes:
  Professional case with sample beakers included, pH/Cond 3400i, pH electrode and conductivity cell, STH 320 stand and calibration and maintenance supplies

The WTW ProfiLine Multi 1970i, supplied with integrated powerful NiMH rechargeable batteries, is both waterproof (IP 66) and submersible (IP 67). With its RS 232 output, real-time clock and 500 data file data logger, this rugged meter conforms to all GLP requirements. It allows the simultaneous connection of pH, conductivity and dissolved oxygen probes. The parameter to be measured is set in the display via the “M” function key and can then be measured or stored. Comes equipped with a handle and carrying strap.
The Multi 1970i has a built-in preamplifier and is therefore suitable in combination with the WTW depth armatures for single-parameter operation at depths down to 100 m (330 ft).
Up to three depth armatures can be simultaneously connected using the adapter ADA/TA 197 pH.

The ConOx sensor is a combination probe that allows for the simultaneous measurement of conductivity, dissolved oxygen, and temperature, and features automatic salinity correction as well. The conductivity portion of the sensor incorporates a proven 4-electrode system which helps to prevent inaccurate readings sometimes caused by difficult or dirty samples. The DO portion of the probe is a galvanic sensor that allows for immediate use after cleaning – eliminating the required “warm-up” time associated with other probes. The ConOx requires little maintenance and is suit- able for all water analysis applications, whether in the labo- ratory or field environments.

The MPP 350 is designed for use with the Multi 3500i with a diameter of 41.5 mm (1.6 in.) and a length of 290 mm (11.42 in.), providing versatility for a wide range of applications. The MPP 350 allows for the simultaneous measurement of pH, dissolved oxygen and conductivity suitable for use in lakes, rivers, saltwater, brackish water, ground water or spring water, or for measurements in boreholes down to a maximum depth of 100 m (330 ft.). The special pH sensor SensoLyt® MPP-A (sold separately) provides reproducible measurement values even at low conductivity levels. The conductivity cell, with proven 4-electrode measurement technology, has a range of 1 µS/cm to 2 S/cm. The MPP 350 is available with 8 different cable lengths up to 100 m (330 ft).