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Home » Products » Liquid Analysis » pH Meters Handheld | High-Precision Portable pH & ORP Measurement

Accurate pH measurement is critical in industrial processes, environmental monitoring, and laboratory verification. Standard lab instruments are cumbersome for field use, and low-end handheld testers often fail to deliver repeatable, stable, and accurate measurements in harsh environments.
The Instrava Handheld pH Meter is engineered for portable, reliable, and multi-functional field measurement. With intelligent electronics and rapid-response electrodes, it delivers precise pH and ORP readings in water, chemical, or biological solutions, making it ideal for on-site verification, process troubleshooting, and field inspections.
Liquid Level Switch Description
pH Meters Handheld Typical Application Scenarios
Environmental monitoring and water quality inspection
Laboratory and field verification in chemical analysis
Industrial water treatment and process control
Aquaculture, hydroponics, and swimming pool water monitoring
Food and beverage production quality control
Cosmetics and pharmaceutical solution testing
Remote or field sites requiring portable measurement
Designed for engineers, technicians, and field operators, it provides reliable readings without sacrificing portability.


pH Meters Handheld Engineering Advantages
Switchable pH / ORP mode (requires compatible electrode) for versatile applications.
pH measurement range: -2.00 to 16.00
Resolution: 0.01 pH, temperature: 0.1°C
Accuracy: ±0.05 pH
Stability: ≤0.01 pH / 24h
Compact (100 × 35 × 204 mm) and lightweight, with handheld operation and rapid-response electrode. Ideal for on-site measurements in industrial, environmental, or laboratory settings.
Powered by 5 × 1.5V AA batteries, enabling extended field usage without frequent recharging.
Chinese-language menu operation simplifies calibration, measurement, and switching between modes.
Liquid Level Switch Parameter
| Parameter | Specification |
|---|---|
| Measurement Range – pH | -2.00 … 16.00 |
| Resolution – pH | 0.01 pH |
| Resolution – Temperature | 0.1°C |
| Accuracy – pH | ±0.05 |
| Stability | ≤0.01 pH / 24h |
| Operating Temperature | 0–60°C |
| Relative Humidity | ≤90% |
| Power Supply | 5 × 1.5V AA batteries |
| Dimensions | 100 × 35 × 204 mm |
| Measurement Mode | pH / ORP (with compatible electrode) |
| Display | LCD |
| Accessories | Standard buffer solutions, carrying case |
| Electrode | Rapid-response field electrode included |
Instrava OEM/ODM
At Instrava, our instruments are developed with a strong focus on real industrial applications. Each product is designed to operate as a reliable component within measurement, control, and automation systems, rather than as a standalone device.
Our engineering team supports customers during product selection by evaluating process conditions, operating environments, and system requirements, ensuring stable and long-term performance in actual use.
In addition to standard configurations, Instrava offers flexible customization options, including measurement range, materials, output signals, communication interfaces, and installation methods. All custom solutions are engineered to meet industrial standards and application-specific demands.
We also support OEM projects and system integration, providing consistent product design, technical documentation, and long-term supply to ensure smooth integration and reliable operation throughout the project lifecycle.

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The meter is engineered with high-input impedance electronics, rapid-response electrodes, and automatic temperature compensation, minimizing drift caused by environmental temperature changes, humidity, or medium variability. This ensures repeatable, reliable measurements in demanding industrial and environmental applications.
Yes. While laboratory instruments provide detailed analysis, the Instrava handheld pH meter delivers lab-grade accuracy (±0.05 pH) in the field, enabling engineers and technicians to verify water, chemical, or process liquids immediately without transporting samples.
The handheld meter supports switchable pH and ORP modes with compatible electrodes. It can accurately measure a wide variety of solutions, including industrial water, wastewater, chemical process fluids, and aquaculture media, offering flexibility for multiple operational scenarios.
Rapid-response electrodes minimize equilibration time
Automatic power-off conserves battery life
Rugged housing and compact form factor withstand industrial field conditions
These features reduce measurement delays, operator intervention, and maintenance costs.
By providing precise and traceable pH readings, the instrument ensures water quality and process monitoring meet industrial standards. Calibration with standard buffers and storage of measurement history allows operators to document compliance and support audit requirements.
Instrava offers custom electrode selection, buffer kits, and OEM labeling, ensuring that the handheld meter integrates seamlessly into multi-site water quality programs, chemical process monitoring, or industrial maintenance workflows, providing standardized, repeatable results across operations.
By choosing Instrava, you gain a partner with a deep understanding of industrial applications and the expertise to meet today’s operational challenges.
Our role extends beyond products—we support your success through dependable solutions and long-term commitment.
Innovation at Instrava is guided by real industrial requirements. We continuously refine our technologies to address evolving operational challenges, ensuring practical and reliable performance in demanding environments.
We provide engineering-level customization to match specific process conditions. From measurement range and materials to output signals and installation options, our solutions are configured to fit real applications.
Quality and reliability are fundamental to every Instrava product. Manufactured under strict quality control and thoroughly tested, our instruments deliver accurate, stable, and long-term performance.
Instrava combines global engineering expertise with responsive local support, ensuring our partners benefit from internationally aligned technology and timely regional service.
Our broad portfolio of measurement and control instruments enables us to address a wide range of industrial needs, providing integrated solutions from a single, reliable source.
We work closely with our partners from technical consultation to after-sales support. Our focus is on delivering solutions that create lasting value and support long-term operational success.
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