Myron L Ultrameter II

Conductivity, TDS, Resistivity, pH, ORP, Temp. Meters

Myron L’s Ultrameter II series includes the Ultrameter II 4P (Conductivity, TDS, Resistivity, Temperature) and the Ultrameter II 6P (Conductivity, TDS, Resistivity, pH, ORP, Temperature). 100 hours/5000 tests from a single 9V battery.

Myron L’s Ultrameter II series consists of the Ultrameter II 4P (conductivity, TDS, resistivity, temperature) and the Ultrameter II 6P (4P plus pH, ORP) meters. Accuracy of ±1% of readings is achieved through advanced four-electrode conductivity cell technology, a high-quality field-replaceable pH/ORP sensor, and microprocessor-based circuitry. Use is as simple as filling the cell cup, pressing a parameter key, and taking the reading. Range selection and temperature compensation are automatic.

A four-digit LCD shares measurement values up to 9999. The Ultrameter II is factor calibrated using NIST traceable solutions. Every Ultrameter II can be supplied with certificates of traceability. Conductivity/TDS conversion ratios can be adjusted when measuring solutions which have not been defined in the microprocessor. Temperature compensation can be adjusted up to 9.99%/°C and it can also be disabled when non-compensated readings are desired.

The Ultrameter II is designed to survive use in the field. It is IP-67/NEMA 6 certified waterproof, buoyant, and immersible in water to 3 feet (1 meter). The Ultrameter II has sufficient memory to record 100 date and time-stamped readings which can be transferred to a PC through a built-in IR port. Settings and data is backed up through a non-volatile microprocessor so nothing is lost when the battery is changed. A single 9V battery powers the Ultrameter II for up to 100 hours of operation (5000 tests) and an automatic shutoff feature preserves battery life.

Ultrameter II Features

  • Measure conductivity, TDS, resistivity, temperature, pH, ORP
  • Automatic temperature compensation
  • Temperature compensation is adjustable up to 9.99%/°C
  • Temperature compensation can be disabled for non-compensated readings.
  • User adjustable conductivity/TDS conversion ratio.
  • Field replaceable extended-life pH/ORP sensor.
  • Auto-shutoff maximizes battery life.
  • Non-volatile microprocessor provides data back-up.
  • More than 100 hours uptime (5000 tests) from one 9V battery.
  • IP-67/NEMA 6 certified waterproof, buoyant, immersible to 3 feet.

Ultrameter II Comparison

Ultrameter II 4P: Conductivity TDS, Resistivity, Temperature.
Ultrameter II 6P: Conductivity, TDS, Resistivity, pH ORP, Temperature.

Feature Ultrameter II 4P Ultrameter II 6P
Adjustable Temp. Compensation
Adjustable Cond/TDS ratio
Memory (100 readings)
Date & Time Stamp
pH Calibration Prompts  
Low battery indicator


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