Professional Laboratory & Industrial Electrochemical Instruments

As a premier ISO-certified manufacturer of laboratory analytical equipment, Hangzhou Qiwei Instrument Co., Ltd. offers a comprehensive lineup of high-precision Electrochemical Instruments—including pH/ORP meters, conductivity analyzers, dissolved oxygen (DO) meters, and ion-selective meters engineered for global distributors, environmental projects, and certified quality control laboratories.

Featuring Automatic Temperature Compensation (ATC), high-stability glass/solid-state electrodes, and GLP-compliant data logging with USB/RS232 interfaces, our electrochemical instruments ensure superior measurement accuracy, long-term stability, and seamless workflow integration.

Request Bulk Wholesale Quote Download Complete Catalog

Desktop PH Meter
Model: PHS-3DW
Measuring Range: PH: 0 ~ 14.00; mV: ±1999; Temperature: 0 ~ 100 °C
Resolution: PH: 0.01/0.1; Temperature: ±1°C
Precision: PH: 0.01; Temperature: ±1°C
Pen-Type Conductivity Meter
Model: DDB-12H, DDB-12L
Measuring range: 0-25ms, 0-1999μs
Resolution: 0.01ms, 1μs
Precision: ±0.02ms + 2% FS, ±2μs + 1% FS
Portable DO Meter
Dissolved Oxygen Measurement Range: (0.00～20.00) mg/L
Temperature Measurement Range: (0～40)°C
Dissolved Oxygen Basic Error: ±0.3mg/L
Temperature Basic Error: ±1°C
Benchtop DO Meter
Model: JPB-605
Measuring Range: (0~19.99) mg/L
Temperature: (0~40) °C
Basic Error: ±0.3 mg/L
Temperature Fluctuation: ±1°C
Portable ORP Tester
Model: ORP-2
Measuring range: (0 ~ ±1999) mV
Resolution: 1mV
Temperature Range: (0 ~ 60) ℃
Online Industrial ORP Contorller
Measurement Range: PH (0-14 ); ORP (± 1900 mV)
Accuracy: +0.02 PH; +1 mV
Resolution: 0.01 PH; 1mV
Stability: ≤ 0.02 PH/24 h; ≤ 3 mV/24 hours
Pocket TDS Tester
Model: TDS-1H (High range), TDS-1L (Low range)
Measuring range: 0~9999 PPM, 0~2500 PPM
Accuracy: ±2% FS
Resolution: 1 PPM
Pen-Type Salinity Meter
Model: YD-1H (High range), YD-1L (Low range)
Measuring range: 0~9999 mg/L, 0~2500 mg/L
Accuracy: ±2 mg/L
Resolution: 1 mg/L
Conductivity Sensor Element
Model: DJS-0.1, DJS-1, DJS-10
Vessel Constant: 0.1±0.02, 1±0.2, 10±2
DO Electrode
Measuring Range: Dissolved oxygen: (0~20) mg/L; Temperature: (0~40℃)
Basic Error: Dissolved oxygen: ±0.3 mg/L; Temperature: ±1℃
Aftercurrent: ≥ 0.15 mg/L
Response Time: No...
Benchtop ORP Meter
Model: ORP-1
Accuracy: 0.01
Measuring Range: (0 ~ ±1999) mV; PH (0, 14)
Resolution: 1 mV; PH 0.01
Pen-Type ORP Meter
Measurement range: ± 1100 mV
Resolution: 1 mV
Precision: ± 15 mV
Calibration: The factory has been corrected, and the user can use it directly

First 12 3 4 5 6 Last

Core Electrochemical Instrument Categories

Versatile electrochemical testing equipment tailored for benchtop laboratory research, portable field inspection, and continuous online monitoring.

1. Digital pH / ORP Meters

High-accuracy benchtop and portable pH/mV meters equipped with automatic buffer recognition (1–5 point calibration), glass combination electrodes, and temperature sensors.

pH Range: -2.000 to 20.000 pH ($\pm 0.002\,pH$)
Automatic Temperature Compensation (ATC)
Ideal for chemical, water plant, and R&D labs

Inquire pH/ORP Series →

2. Conductivity, TDS & Salinity Meters

Advanced conductivity meters supporting cell constants ($K=0.1, 1.0, 10$) for ultra-pure water to high-salinity wastewater measurement with selectable linear/non-linear temperature compensation.

Auto-ranging: 0.000 $\mu S/cm$ to 200.0 $mS/cm$
TDS, Salinity, and Resistivity mode switching
Four-electrode cell option for high salinity

Inquire Conductivity Series →

3. Dissolved Oxygen & Multiparameter Meters

Polarographic/Optical DO meters and multi-channel electrochemical meters capable of measuring pH, Conductivity, Dissolved Oxygen, and Specific Ions ($F^-, Cl^-, Na^+, Ca^{2+}$) simultaneously.

Automatic barometric pressure & salinity compensation
Multi-channel simultaneous display
GLP compliant memory for up to 1000 data sets

Request Multiparameter Rates →

Critical Applications & Engineering Strengths

Where Electrochemical Instruments Are Essential

Electrochemical testing is fundamental across analytical chemistry and process safety. Key sectors include:

Environmental Water Quality Monitoring: River, lake, groundwater, and sewage treatment plant effluent analysis
Pharmaceutical & Biotechnology: USP/EP compliant purified water conductivity and culture medium pH control
Food, Beverage & Agriculture: Beverage acidity, soil salinity, and irrigation water testing
Chemical & Power Generation: Boiler feed water purity, pickling bath acidity, and cooling tower water balance

Qiwei Manufacturing & OEM Advantages

Supporting international laboratory suppliers, engineering contractors, and private-label buyers:

High Precision Circuit Design: Ultra-low input bias current $(< 1\,pA)$ ensures rapid response and minimal electrode polarization
Comprehensive Electrode Portfolio: Glass, epoxy body, spear-tip, flat-surface, and industrial armored probes
OEM & ODM Customization: Logo branding, custom housing colors, localized language firmware UI, and customized calibration standards
Internal Links: Combine with our Water Quality Test Equipment, COD Analyzers, and Spectrophotometers for complete analytical laboratory setups.

Frequently Asked Questions (Electrochemical Instruments Sourcing Guide)

Q1: What is the importance of Automatic Temperature Compensation (ATC) in electrochemical testing?

Electrochemical readings (such as pH, conductivity, and dissolved oxygen) vary directly with sample temperature due to Nernst equation potential shifts and ion mobility changes. Qiwei instruments integrate high-precision temperature sensors to automatically normalize readings to standard reference temperatures ($25^\circ C$ or $20^\circ C$).

Q2: How do I select the right conductivity cell constant ($K$ value)?

Choose $K=0.1$ for low-conductivity pure or ultrapure water ($< 20\,\mu S/cm$), $K=1.0$ for standard drinking water or surface water ($0.5\,\mu S/cm - 20\,mS/cm$), and $K=10$ for high-salinity wastewater or concentrated chemical solutions ($> 20\,mS/cm$).

Q3: Do you support OEM custom branding and distributor volume discounts?

Yes, as a factory-direct manufacturer, we provide complete OEM/ODM custom branding, customized UI interfaces, private label packaging, and tiered volume discounts for global laboratory suppliers.

Require Factory Direct Pricing or Custom Electrochemical Testing Equipment?

Get in touch with Hangzhou Qiwei Instrument today for technical consultation, electrode options, and competitive distributor pricing within 24 hours.

Inquire Now & Get Quote Talk to Analytical Instrument Engineer

Hangzhou Qiwei Instrument Co., Ltd. is one of the most reliable manufacturers and suppliers of electrochemical instruments in China, featured by quality products and good service. Please rest assured to buy bulk durable electrochemical instruments in stock here from our factory. We also accept customized orders.