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 Rika Sensor is a weather sensor manufacturer and environmental monitoring solution provider with 10+ years of industry experience.

Top 10 pH Sensor Manufacturers

1. Introduction

The first-ever pH sensor sold 126,000 units during its lifetime. The manufacturer of these pH sensors was innovative, combining all the necessary components into a single, revolutionary unit. Solid sales signified the importance and large-scale application of pH sensors.

 

Over time, manufacturers of pH sensors have worked to make these sensors more accurate, incorporating modern techniques such as live temperature compensation, enhanced sensitivity, alkali error compensation, and dual output. A modern pH sensors use a voltage signal to generate readings. A high-end pH sensor will generate a change of 59 mV per pH unit at 25°C (standard temperature). The signal value is crucial for achieving higher accuracy and repeatability in readings.

 

This guide will help you explore the top 10 pH sensor manufacturers that offer the latest and most advanced pH sensors. It will cover all the necessary aspects to select a supplier for your project or B2B business model.

2. Global pH Sensor Industry Overview

Finding a pH sensor manufacturer that can provide accurate, reliable, and durable pH sensors for a wide range of applications—like water quality, industrial processes, agriculture, and environmental monitoring—can be challenging. There are tons of things to consider, like certifications, manufacturing capability, variety, and export capabilities.

 

The competitiveness in the pH sensor manufacturing facility is driven by technological innovation, the demand for specialization, and the need to offer a competitive edge in a global market. This involves introducing trending technologies, such as smart sensor integration, real-time monitoring, and IoT-enabled sensors.

 

Owing to the strict regulatory compliance required by governments and organizations, the market for water quality sensors is growing. The parameters to monitor for environmental health are expanding, and a pH sensor is an essential part of it. Moreover, industrial automation can involve chemical dosing, flow adjustment, and other processes. The market is expected to grow from USD 1.13 billion in 2025 to nearly USD 1.64 billion by 2034. Rapid growth and industrialization make the Asia-Pacific region a lucrative market for businesses.

3. Analysis of Top 10 Leading pH Sensor Manufacturers

3.1 Hanna Instruments

Company Profile - Hanna Instruments

 Top 10 pH Sensor Manufacturers 1

Location: Woonsocket, Rhode Island, USA

Business Type: Analytical Instruments

Certification: ISO 9001, ISO 14001, ISO/IEC 17025, and REACH

Product Line: Benchtop and portable pH meters, electrodes, and multi-parameter probes

Application: Laboratories for food & beverage, environment, and water treatment

 

Key Highlights - Hanna Instruments

  • User-Friendly Portable pH Sensors
  • Good Laboratory Practice (GLP) Data Logging
  • Affordable Multi-Meter Probes

 

Manufacturer's Description - Hanna Instruments

Hanna Instruments' specialty lies in its convenient solutions for laboratories and food testing. Their sensors lie within the moderately priced range and primarily focus on ensuring user-friendly interfaces and easy-to-set-up solutions. They have an extensive global distribution setup. There are over 3,000 products crafted in Italy, the United States, Romania, and Mauritius.

 

3.2 Thermo Fisher Scientific / Orion Sensors

Company Profile - Thermo Fisher Scientific / Orion Sensors

Top 10 pH Sensor Manufacturers 2 

Location: Waltham, MA

Business Type: Multinational Analytical Sensors Manufacturer

Certifications: ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, CE Marking, RoHS, REACH, NSF/ANSI, and ATEX/IECEx

Product Line: Benchtop, Portable Meters; Electrodes, and Spear-Tip Sensors

Application: Industrial water, laboratories, pharmaceuticals, and environmental monitoring.

 

Key Highlights - Thermo Fisher Scientific / Orion Sensors

  • Reliability for Research Settings
  • ±0.005 Accuracy for pH Lab Testing
  • Global Presence

 

Manufacturer's Description - Thermo Fisher Scientific / Orion Sensors

Whether it's for science or industrial lab analysis, ThermoFisher will feature suitable pH instrumentation. The sensors are highly sensitive owing to their specialized applications. The company enjoys a consistent position on the Fortune 500 list. It was a merger between Thermo Electron Corporation and Fisher Scientific International, which occurred in 2006.

 

3.3 Endress+Hauser

Company Profile - Endress+Hauser

Top 10 pH Sensor Manufacturers 3 

Location: Reinach, Switzerland

Business Type: Process Automation Instruments and Solutions

Certifications: ISO 9001, ISO 14001, ISO 45001, ATEX/IECEx (explosive atmospheres), CE, SIL 2/3, EHEDG, and NACE MR0175

Product Line: Inductive Digital Connectors, Modular Sensors, and Submersible pH Probes

Application: Chemical/Pharma Reactions, water/wastewater treatment, food/beverage production, and compliance monitoring

 

Key Highlights - Endress+Hauser

  • Digital Memosens for Predictive Maintenance
  • High Chemical Resistance in Harsh Conditions
  • Certified for Hazardous (ATEX) Environments

 

Manufacturer's Description - Endress+Hauser

The company was founded in 1953 by Georg Endress and Ludwig Hauser in Basel, Switzerland. It has grown into a company that holds over 9,000 patents. Their solution includes ISFET (Ion-Sensitive Field-Effect Transistor) and enamel electrodes, which are ideal for locations where traditional glass-based sensors will break.

 

3.4 Mettler-Toledo

Company Profile - Mettler-Toledo

 Top 10 pH Sensor Manufacturers 4

Location: Columbus, Ohio, USA

Business Type: Precision Analytical Instruments

Certifications: ISO 9001:2015, ISO 14001:2015, ISO 45001, CE Marking, EHEDG, RoHS, REACH

Product Line: High-precision Laboratory and Industrial Sensors

Application: Pharmaceutical, Chemical, and Water Treatment

 

Key Highlights - Mettler-Toledo

  • ISM Smart Diagnostics for Plug-and-Play
  • Ultra-high Accuracy (±0.002 pH) with Low Drift
  • HART/Profibus Integration for Pharma

 

Manufacturer's Description - Mettler-Toledo

Founded in 1991, the company has roots originating from Switzerland and the U.S. Their goal is to build sustainable solutions and R&D. They are the pioneers of Intelligent Sensor Management (ISM®) technology in the 1990s. Their primary sales target is the sciences/pharma industry, with a trailing 12-month revenue of $3.83 billion (as of Q1 2025).

 

3.5 Rika Sensor – Company Overview and Product Line

Company Profile - Rika Sensor

Top 10 pH Sensor Manufacturers 5 

Location: Changsha, Hunan, China

Business Type: Industrial-Grade Sensor Manufacturer

Certifications: CE-EMC, CE-LVF,  RoHS, ISO9001, and TUV

Product Line: Versatile Environment Specific and Modular Multiparameter pH Sensor

Applications: Agricultural irrigation, chemical industry, sewage treatment, biodegradation, power plant, water treatment, environmental protection, and reservoir water monitoring

 

Key Highlights of Rika Sensor

  • 98% Accuracy in Flowing Liquids Within 8 to 10 Seconds
  • IP68 Protection
  • High Accuracy (0.01 pH)

 

Manufacturer’s Description - Rika Sensor

Rika is at the forefront of modern innovation in pH sensors. They utilize the latest real-time temperature compensation for accurate readings and offer dual output (RS-485 & 4–20 mA) in their pH sensors for maximum compatibility. They offer OEM/ODM, B2B, and customized solutions for brands looking to expand their product base or entrepreneurs launching their own product.

3.6 Sensorex

Company Profile - Sensorex

Top 10 pH Sensor Manufacturers 6 

Location: Garden Grove, California, USA

Business Type: Lab and Process Instrumentation

Certifications: ISO 9001:2015, RoHS compliant, and TSCA 1976

Product Line: In-line and Submersible Sensors

Application: Disinfection and Neutralization of Pools, Field Sampling, and Live Sensing

 

Key Highlights - Sensorex

  • Self-Diagnosing Digital Sensors
  • Chemical-Resistant Ultem Bodies for Longevity
  • Quick-Connect Fittings for OEM Ease

 

Manufacturer's Description - Sensorex

The company has 50 years of experience in the field of liquid analysis. It has a strong presence in North America, which accounts for 60% of global sales. They have a single factory operating in California, USA. Approximately 40% of their portfolio consists mainly of pH sensors. Their focus is on producing modular "smart" designs with digital outputs.

 

3.7 Hamilton Company

Company Profile - Hamilton Company

Top 10 pH Sensor Manufacturers 7 

Location: Reno, Nevada, USA

Business Type: High-Performance pH Sensors and Probes

Certifications: ISO 9001:2015, ISO 14001:2015, FDA-compliant materials, EHEDG

Product Line: pH/ORP probes (pre-pressurized, single-use, Arc) pH variants

Application: Biotechnology/Pharma, Food/Beverage, Chemicals, and Research

 

Key Highlights - Hamilton Company

  • Low-maintenance Gel Electrolytes (No Refill)
  • Optical Stability for Biotech Accuracy
  • Gamma-Sterilizable Single-Use Options

 

Manufacturer's Description - Hamilton Company

The company has experience in automating processes. They have over 75 years of experience and employ more than 1,200 people worldwide. Their focus is on manufacturing non-glass ISFET sensors and pre-pressurized designs. These eliminate refills and extend the life of sensors to 3 years or more in sterile processes.

 

3.8 YSI (Xylem Analytics)

Company Profile - YSI (Xylem Analytics)

Top 10 pH Sensor Manufacturers 8 

Location: Yellow Springs, Ohio, USA

Business Type: Innovative Environmental Monitoring Instruments

Certifications: ISO 9001:2015, CE, NIST, EPA, NSF/ANSI standards, and RoHS

Product Line: Multi-Parameter Integration (pH + DO/EC/turbidity)

Application: Environmental Agencies, Water Utilities, Aquaculture, And Wastewater

 

Key Highlights - YSI (Xylem Analytics)

  • Low-Maintenance (1–2 year Lifespan)
  • Automatic Temp Compensation In Sondes
  • Low-Power Data Logging For Remote Field Use

 

Manufacturer's Description - YSI (Xylem Analytics)

YSI is another Fortune 500 company that works on water technology. Their focus is on building products that are rugged and ready to operate in the field. The integrated systems for environmental monitoring, like buoys/DCPs, are particularly innovative solutions by YSI. Currently, they are focused on Bluetooth integration with their pH sensors.

 

3.9 Apera Instruments

Company Profile - Apera Instruments

Top 10 pH Sensor Manufacturers 9 

Location: Columbus, Ohio, USA

Business Type: Portable and Benchtop Electrochemical Meters and Sensors

Certifications: ISO 9001:2015, CE Marking, RoHS, NIST, and EPA

Product Line: Handheld Meters, Pen Testers, and Replacement Probes

Application: pH in Nutrient Solutions, Pool Maintenance, Food QC, and Soil Testing

 

Key Highlights - Apera Instruments

  • Fast-response Swiss sensors (±0.01 pH)
  • Waterproof (IP57) smart portables with apps
  • Auto-calibration for education/hobbyists

 

Manufacturer's Description - Apera Instruments

Apera Instruments was founded in 1991 and has always aimed to produce affordable products with high-precision analysis. They produce in-house electrodes for maximum quality control and invest in user-friendly innovations. Their products are rigorously tested and offer a 2-year warranty on instruments (6 months on Sensors).

 

3.10 Yokogawa Electric

Company Profile - Yokogawa Electric

Top 10 pH Sensor Manufacturers 10 

Location: Musashino, Tokyo, Japan

Business Type: Industrial Automation, Test & Measurement, and Control Systems

Certifications: ISO 9001:2015, ISO 14001:2015, ISO 45001, CE Marking, and RoHS/REACH

Product Line: ORP, Flat-Glass, Sodium Enamel pH Detectors

Application: Water Treatment, Effluent Monitoring, Pharma Sterilization

 

Key Highlights - Yokogawa Electric

  • High-Pressure/Chemical Resistance (Up To 689 kPa)
  • Differential Amplifiers For Noise Immunity
  • Easy Electrode Replacement In Fieldbus Systems

 

Manufacturer's Description - Yokogawa Electric

Yokogawa Electric is a multinational company that works on industrial automation, testing, and control system design and manufacturing. As of now, it employs over 19,000 people across 84 subsidiaries and 3 affiliates in 55 countries. Their primary source of revenue is DCS/PLC/SCAD, which accounts for 70% of the total.

4. Conclusion

The applications of pH sensors go beyond just simple liquid monitoring. They are essential to fulfil the strict regulatory requirements of modern industries. The sensors must be robust, versatile, and incorporate the latest technology to remain relevant. Our list of the top 10 pH sensor manufacturers summarizes each company's specialties and focus. It's meant to help you select the right vendor for your application. There are Fortune 400 companies mentioned in the list. The pH sensor is a lucrative business, and utilizing OEM/ODM offers from some brands can help you launch your own brand.

 

Despite the worthy competitors mentioned as the top pH sensor manufacturers, RIKA stands out primarily due to its versatility. They can work across a wide range of applications and offer unique OEM/ODM services suitable for B2B businesses. Here are the top differentiators that make RIKA the best choice:

  • Ultra-Low Cost ($50-$200)
  • Rugged IP Ratings (IP68)
  • Fast Response (<2s)
  • Fast, Accessible Global Supply

Visit the RIKA website to explore all their pH sensors that offer versatility and robustness. Here are some examples:

  • RK500-12 Type-A2 (Seawater, industrial water): Durable pH meter sensor designed for seawater and industrial water with Glass+PC+ABS construction.
  • RK500-12 Type-B3 (High-temperature environment): High-temperature pH probe built with Glass+316L for harsh industrial environments up to 100°C.
  • RK500-12 Type-C1 (Conventional water): Water level pH sensor for rivers and conventional water with real-time temperature compensation.

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