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Water Analysis Meters & Electrodes

OHAUS water analysis meters can be used to measure a number of parameters including pH, dissolved oxygen (DO), conductivity and more. Our benchtop and portable meters are perfect for use in lab or food manufacturing environments. The OHAUS range extends from user-friendly economic meters to premium performance meters. Browse our range of models below for more detailed product information and features.
 
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Starter 5000 pH Bench
High Performance Benchtop pH Meter Ideal for Accurate Everyday Measurements in the Laboratory
  • A 1000-item library allows for easy recall from data storage. Flexible pH analysis from 10 sensors for calibration storage, 1 self-defined and 8 pre-defined buffer groups, 3 endpoint modes & GLP mode.
  • A user-friendly bench meter with an innovative design, including an adjustable standalone electrode holder and large touch-screen, backlit LCD display.
  • Featuring a USB port, IP54 housing and in-use-cover, this flexible and smooth-operating bench meter is built to last.
AQUASEARCHER™ AB41PH Bench Meter
An Advanced, Research-Grade Benchtop pH Meter Offering Accurate, Repeatable Results
  • With selectable resolution from 0.1 to 0.001 and an intelligent i-Steward system, AB41PH is an excellent pH bench meter with high resolution and consistent accuracy.
  • Equipped with a 6.5-inch large LCD display and a touch keypad, AB41PH offers a simple and precise control experience.
  • AB41PH offers activity logs with an audit-trail report generated via SPDC software. User management provides access to specific functions.
AQUASEARCHER™ AB33M1 Bench Meter
Easy-to-Use and Accurate Multi-Parameter Benchtop Meter
  • Capable of measuring up to 7 parameters including pH, ORP, conductivity, TDS, salinity, resistivity and temperature, the AB33M1 utilizes 2 independent measuring channels which can work simultaneously.
  • With multifunctional touch keypads, AB33M1 makes measurement simple and fast. The intelligent i-Steward monitors the condition of electrodes, ensuring the accuracy of the results.
  • A 1000-item memory for measurement and calibration allows for efficient data documentation. Records are kept with date/time for traceability. RS232 and USB enable connection to external devices.
AQUASEARCHER™ AB33PH Bench Meter
Highly Reliable and User-Friendly pH Benchtop Meter for Standard Laboratory Applications
  • With multifunctional touch keypads, AB33PH makes measurement simple and fast within 3 steps. The intelligent i-Steward monitors the condition of electrodes, ensuring the accuracy of the results.
  • Auto endpoint mode and auto buffer recognition makes calibration easy. A 1000-item memory for pH measurements and calibration trail makes for efficient data documentation.
  • A user-friendly bench meter with an innovative design, including 6.5 in. large LCD display & adjustable stand-alone electrode holder. Multiple connectivity capabilities include RS232 & USB interface.
AQUASEARCHER™ AB33EC Bench Meter
Highly Reliable Conductivity/TDS/Salinity/Resistivity Benchtop Meter for Standard Laboratory Applications
  • Selectable reading reference temperatures of 20 or 25 ºC with linear curve options and automatic temperature compensation ensures accurate results.
  • Features such as auto-stop, auto temperature compensation, adjustable TDS factor, 2- or 4-cell conductivity probe compatibility make AB33EC well suited for universal laboratory applications.
  • A 1000-item memory for conductivity measurements and calibration trail allows for efficient data documentation. Standard RS232 and USB interface allows connection to external devices.
AQUASEARCHER™ AB23PH Bench Meter
Simple to Use Benchtop Meter for Easily Measuring pH and ORP
  • With an intuitive design and auto buffer recognition, AB23PH is an easy and straightforward meter for pH measurement.
  • Large bright LCD display with complete measurement information simplifies operation and allows you to monitor the results from a distance.
  • Featuring a compact stand-alone electrode holder, AB23PH increases the flexibility of experiments and fits ideally in any lab.
AQUASEARCHER™ AB23EC Bench Meter
Simple-to-Use Benchtop Meter Designed to Easily Measure Conductivity, TDS and Salinity
  • With six instructional menu buttons and auto temperature compensation, the AB23EC is an easy and straightforward meter for measurement.
  • A large 5-inch backlit LCD display with complete measurement information simplifies operation and allows you to monitor the results from a distance.
  • Featuring a compact stand-alone electrode holder, the AB23EC increases the flexibility of the experiment and fits ideally in any lab.
Starter™ 2200 pH Bench Meter
Affordable Benchtop pH Meter for Basic Laboratory Applications
  • ST2200 is a user-friendly bench meter that clearly displays critical information - with five distinctly marked keys which allow users to operate the instrument with minimal training.
  • Auto buffer recognition and auto-endpoint mode make calibration and measurement simple and ideal for routine pH measurement.
  • The built-in electrode holder provides straightforward and convenient all-in-one operation, while the attached quick guide clearly explains the operating steps.
Starter 400M pH & Conductivity Portable
Durable, Waterproof Battery-Operated Multi-Parameter Meters Ideal for Field Testing!
  • Built with IP67 waterproof housing as well as a rubber cover and IP67 probes, the ST400  is ideal for prolonged use in any field environment.
  • Rechargeable lithium battery provides 40 hours of uninterrupted use and more than 300 charge cycles - eliminating the need to change out batteries often.
  • The ST400M features intuitive software which guides the user through operation. All necessary information to run tests successfully such as electrode condition is displayed clearly on the large LCD.
Starter 400 pH Portable
Durable, Waterproof Battery-Operated pH Meters Ideal for Field Testing!
  • Built with IP67 waterproof housing as well as a rubber cover and IP67 probes, the ST400 is ideal for prolonged use in any field environment.
  • Rechargeable lithium battery provides 40 hours of uninterrupted use and more than 300 charge cycles - eliminating the need to change out batteries often.
  • The ST400 features intuitive software which guides the user through operation. All necessary information to run tests successfully such as electrode condition is displayed clearly on the large LCD.
Starter 400D DO Portable
High-Performance, Low-Maintenance Dissolved Oxygen (DO) Meter with Optical Methodology for Accuracy
  • Optical DO probe requires minimal maintenance and offers immediate measurement readings. No warm up or sample preparation needed.
  • Large backlit LCD screen provides easy to read results - even in low light environments. Ideal for secure field use with a meter stand, wrist strap and durable IP54 housing.
  • The 99-measurement library stores data for future reference and allows for easy one-touch recall of the last calibration data.
Starter 300 pH Portable
Convenient Portable pH Meter for Wherever Your Work Takes You
  • Auto buffer recognition with four different buffer groups makes it easy to avoid errors during the calibration process.
  • Easy-to-use and accurate with a simple calibration process, automatic temperature compensation and fast results. Ideal for secure field use with a meter stand, wrist strap and durable IP54 housing.
  • The 30-measurement library stores data for future reference and allows the user to easily recall the last calibration data with one quick touch.
Starter 300C Conductivity Portable
Convenient Portable Conductivity Meter for Wherever Your Work Takes You
  • Four-pole linear electrode with temperature sensor safeguards the unit from polarization and pollution effects to ensure accurate readings.
  • Easy-to-use and accurate with a simple calibration process, automatic temperature compensation and fast results.
  • The 30-measurement library stores data for future reference and allows the user to easily recall the last calibration data with one quick touch.
Starter 300D DO Portable
Convenient Portable Dissolved Oxygen (DO) Meter for Wherever Your Work Takes You
  • The galvanic electrode can be used immediately after being powered on without the typical wait time associated with dissolved oxygen meters.
  • Easy-to-use and accurate with a simple calibration process, automatic temperature compensation and fast results.
  • The 30-measurement library stores data for future reference and allows the user to easily recall the last calibration data with one quick touch.
Starter Pen Meters
Compact Design for Fast, Convenient Electrochemistry Measurement At Your Fingertips
  • Small, economical pen meters offer simple, fast, and straightforward operation.
  • With durable IP67 waterproof ABS housing, protective sensor cap, and an automatic shutdown feature that preserves battery life, OHAUS pen meters can endure consistent use in rough, wet environments.
  • Equipped with a wrist strap to prevent accidental drop and damage.
Starter Electrodes
OHAUS Precision Powers the Starter Electrodes
  • All sturdy and durable electrodes are constructed of either plastic or glass shafts and built to withstand daily use.
  • All electrodes include a temperature sensor, which powers automatic temperature compensation and ensures accurate measurements.
  • All electrodes fit perfectly in the electrode holders on OHAUS bench meters and electrode clips on all OHAUS portable meters.