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METTLER TOLEDO™ Portable pH/Conductivity/Dissolved Oxygen/Ion Meters

Water and dust proof, IP67 rated meter for portable or field measurements. Portable meters compatible with pH, conductivity, dissolved oxygen, and ion selective electrodes.

Manufacturer:  METTLER TOLEDO™ 30207955

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Catalog No. 01-913-971

Includes: Instrument, electrode clip, InLab 738-ISM™ and sachets of conductivity standards (1413µS/cm and 12.88mS/cm), operating instructions, quick guide, test report declaration of conformity and batteries



  • Dust proof
  • Water proof
  • IP67 Rated
  • pH, Redox/ORP, conductivity, dissolved oxygen and ISE measuring capability (model dependent)
  • Compatible with a wide range of IP67-rated electrodes for any application
  • Compatible with our ISM electrodes that capture and save calibration data which is then automatically recognized by the meter once connected
  • Data storage available; capacity dependent on model
  • Export data to a printer or Excel file
  • EasyDirect software available for data transfer (model dependent)
  • Rubber holster available for single-handed measurements
  • uGo carrying and protecting case included in selective kits (see below for complete list); available for all portable meters


ISO 9001, ISO 14001



4 x 1.5 V AA or 1.3 V NiMH acc.
Manual entry
0.01 μS/cm to 500 mS/cm
0.00 to 42 psu
-5°C to +105°C
InLab 738-ISM conductivity/temperature electrode
Single channel; conductivity, TDS, salinity
0.01 to 1 (auto-range)
0.01 to 1
222 x 70 x 35 mm
250 to 400 hr.
ISO 9001, ISO 14001
IP 67
0.00 to 100.0 Mohm/cm
0.01 mg/L to 300 g/L
Ideal for aqueous samples with mid- to high conductivity.
LTW 7-pin (sensor)
Seven2Go S3 Conductivity Meter: Standard Kit
0.01 to 0.1
Automatic or Manual
270 g
Product Certifications