pH Meters for Water
Precise Water Analysis in the Lab or on the Go
A pH meter for water is an analytical tool that measures the acidity or alkalinity of a water solution using a pH electrode. The pH electrode measures hydrogen ion concentrations and converts them into pH values. Water analysis is based on precise and accurate pH measurements. Our pH meters can be used in many applications such as monitoring water quality and determining the pH of drinking or distilled water, and they ensure exceptional consistency in a wide range of laboratory experiments.
Advantages of METTLER TOLEDO's pH Meters for Water
Measure Different Parameters
pH, conductivity, and dissolved oxygen are common parameters that are often measured together in the laboratory. Choose from single- or multi-channel instruments to measure up to three parameters simultaneously in the same or different samples.
Benefit from Our Broad Sensor Portfolio
Our comprehensive electrode portfolio complements our pH meter offerings. Ensure that you have a suitable sensor for every application to obtain accurate results. Read more
Fully Customizable to Your Needs
METTLER TOLEDO is a complete solution provider, from meters and sensors to calibration solutions and software. Create an effortless pH system with seamless measurement, data transfer, and automation.
Get Guided Sample Workflows
Set up your own methods with the SevenExcellence™ meter, which guides operators step-by-step through the measurement process. The instrument also offers a number of predefined methods that can quickly and easily be adapted to your requirements. Read more
Protect Your Data
Avoid unauthorized changes and define measurement processes and workflows with SevenExcellence™ user management. The SevenExcellence meter is a suitable choice for highly regulated environments. When paired with LabX™ software, all operations are recorded in an audit trail. Read more
Automate Your pH Analysis
Increase productivity and eliminate measurement inconsistencies among users with the SevenExcellence™ meter and an InMotion™ autosampler. This system supports USP <791> and <645> compliance and offers fully automated calibration of sensors and measurements of up to 300 samples. Read more
Safely Measure in Harsh Environments
Working in harsh environments may require a specially protected instrument to extend the device’s durability and lifetime. We offer portable and benchtop meters with IP67 and IP54 protection, which makes them water- and dust-resistant and offers protection against chemicals.
Useful Related Links
Application Specific Sensors
Accurate measurements begin with a reliable sensor. Find the right sensor for a wide range of applications and measurement parameters including pH, ORP, conductivity, ion concentration, and dissolved oxygen. Read more
Quality Solutions for Calibration and Care
pH, ORP, conductivity, ion, and DO readings are only as accurate as the solutions used for calibration. We also offer maintenance and verification solutions for high measurement precision and uptime. Read more
Expert Application Support
Our pH Competence and Support Center (pH CSC) offers you easy access to dedicated application specialists for your pH, ORP, ion, conductivity, and DO measurements. These specialists provide know-how to help ensure a high degree of success in all your critical electrochemical analyses. Read more
Manage Data with LabX Software
LabX™ is a software that can help you comply more easily with regulatory standards such as FDA 21 CFR Part 11. LabX records all relevant actions taken on the instrument or PC in the audit trail for full traceability and flexibility. Read more
Increase Efficiency with InMotion Autosampler
Connect your benchtop meter with an InMotion™ autosampler to speed up your analysis. The autosampler, which handles up to 300 samples, automatically executes measurements, calibrations, and cleaning/conditioning steps to ensure high throughput and repeatable results. Read more
Meter and Sensor Accessories
Our meters are equipped with various interfaces that allow you to connect peripherals such as printers to document results, barcodes for sample identification, or stirrers to mix your sample while measuring. Read more
Explore Our Services - Tailored to Fit Your Equipment
We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.
Support & Repair
- Benchtop Conductivity Meters
- Benchtop pH Meter
- Conductivity Meters
- Conductivity Meters for Water
- Digital pH Meters
- FiveEasy Standard Benchtop Meter
- FiveGo Portable pH Meter
- Handheld pH Meters
- Ion Meters
- Laboratory pH Meters
- Micro pH Meters
- Multiparameter pH Meters
- ORP Meters
- pH and Conductivity Meters
- pH and Dissolved Oxygen Meters
- pH Meters for Beer
- pH Meters for Biotech
- pH Meters for Bread Dough
- pH Meters for Canned Food
- pH Meters for Chemistry Labs
- pH Meters for Cosmetics
- pH Meters for Dairy Products
- pH Meters for Food
- pH Meters for Meat
- pH Meters for Pharma
- pH Meters for Sauces
- pH Meters for Sushi Rice
- pH Meters for Wine
- pH Meters with Electrodes
- pH/Ion Meters
- pH/mV Meters
- pH/ORP Meters
- Portable Conductivity Meters
- Portable pH Meter
- Seven2Go Portable pH Meter
- SevenDirect Advanced pH Meter Line
- SevenExcellence pH Meters
- SevenGo Duo Portable pH Meter
FAQs
How do you check the pH of water with a pH meter?
Measuring the pH of water can be challenging due to the low ionic nature and susceptibility to atmospheric gases like CO2.
To measure the pH of water one must use a calibrated sensor that can measure the pH in low ionic concentrations of H+ ions.
It is crucial to prevent exposure to air and atmospheric CO2 while handling samples. Whenever possible, use glass containers to directly measure the sample from its source and minimize the time spent storing the sample. Take precautions when handling and measuring pH to avoid contamination from atmospheric CO2. Rinse the electrode thoroughly with clean water and dry it with a clean tissue.
To know more refer to our application note on pH measurement of pure water: pH of Pure Water: Specialized Sensors Increase Measurement Performance (mt.com)
How do you check water pH without a pH meter?
To check the pH of water without a pH meter, you can use alternative methods to estimate the pH. Here are some ways:
- Litmus paper is the most common method for checking water pH without a pH meter. Litmus paper has been treated with a dye that changes color depending on the pH of the solution it is dipped into.
- Universal indicator is a solution that changes color depending on the pH of the solution it is added to.
- Indicator dyes are similar to universal indicators but are more specific to a particular pH range.
While the above methods can help you estimate the pH, a pH meter is the most accurate and precise way to check the pH of water.
How do you use a pH meter for water?
When measuring the pH of water with a pH meter, it's essential to use a properly calibrated sensor that can accurately detect low ionic concentrations of H+ ions. To prevent contamination, it's important to avoid exposure to air and atmospheric CO2 while handling samples. Ideally, glass containers should be used to measure samples directly from the source, and the time spent storing the sample should be minimized.
To ensure accurate measurements, it's crucial to take precautions when handling and measuring pH, such as thoroughly rinsing the electrode with clean water and drying it with a clean tissue.
To know more refer to our application note on pH measurement of pure water: pH of Pure Water: Specialized Sensors Increase Measurement Performance (mt.com)