The ERUN-SP4 portable multi-parameter water quality analyzer simultaneously measures pH, ORP, dissolved oxygen (DO), and electrical conductivity (EC) in a single handheld device—and it comes fully certified with CE, RoHS, and ISO 9001, making it ready for global export.
A multi-parameter water quality analyzer consolidates multiple critical water quality measurements into one instrument, eliminating the need for separate single-parameter devices.Whether you are testing drinking water, surface water, or wastewater, a single portable unit that measures pH, ORP, DO, and EC delivers comprehensive water quality assessment in minutes.
The global water quality testing equipment market was valued at $4.83 billion in 2025 and is projected to reach $5.13 billion in 2026, growing at a CAGR of 6.1%. The portable water quality meters segment alone was valued at $453 million in 2024 and is forecast to reach $586 million by 2031.This growth reflects increasing global demand for rapid, on-site water quality monitoring across environmental, industrial, and municipal applications.
The ERUN-SP4 portable multi-parameter water quality meter is fully certified with CE, RoHS, and ISO 9001—three credentials that demonstrate compliance with international safety, environmental, and quality management standards.
CE certification confirms the product meets EU safety, health, and environmental protection requirements, essential for entry into European markets. RoHS certification (compliant with EU Directive 2011/65/EU and 2015/863/EU amendments) ensures the device is free from hazardous substances like lead, mercury, and cadmium.ISO 9001 certification verifies that ERUN’s manufacturing processes adhere to internationally recognized quality management standards.
Together, these certifications eliminate regulatory barriers for importers in the EU, North America, Southeast Asia, the Middle East, and beyond—making the ERUN-SP4 a truly export-ready solution.
The ERUN-SP4 measures four essential water quality parameters—pH, ORP, dissolved oxygen, and electrical conductivity—each providing critical data about water safety and quality.
pH indicates acidity or alkalinity (0–14 scale), essential for drinking water, aquaculture, and industrial process control.ORP (Oxidation-Reduction Potential) measures a water sample’s ability to oxidize or reduce contaminants, crucial for disinfection monitoring in water treatment.Dissolved Oxygen (DO) is a key indicator of water health for aquatic life and wastewater treatment efficiency.Electrical Conductivity (EC) measures total dissolved solids (TDS) and salinity, reflecting overall water purity.
The ERUN-SP4 uses a modular electrode method with customizable options including fluorescence method dissolved oxygen, polarographic method dissolved oxygen, pH, ORP, and conductivity electrodes.Users can freely combine parameters according to specific testing needs.
The ERUN-SP4 delivers laboratory-grade accuracy in a portable, field-ready package, with a wavelength accuracy of ±1nm and absorbance range from -2.500 to 2.500A.
Key technical specifications include:
Parameter | Specification |
|---|---|
Wavelength range | 420nm, 440nm, 470nm, 520nm, 540nm, 560nm, 610nm, 630nm, 660nm, 680nm, 700nm (customizable) |
Wavelength accuracy | ±1nm |
Absorbance range | -2.500~2.500A |
Colorimetric linearity | ±0.002A (0-1A) |
Colorimetric accuracy | ±0.005A at 1A |
Display | Dot matrix 240×160 LCD |
Dimensions | 230mm × 88mm × 52mm |
Weight | 500g |
Working environment | 5-40°C, humidity ≤90% |
Storage environment | -40-60°C, humidity ≤90% |
Power supply | Rechargeable lithium battery 7.4V 1500mAh (Type-C charging) |
The instrument can store up to 9,999 measurement records including parameter name, concentration, unit, and detection date/time.With data storage supporting up to 999 user-calibrated curves (total 999), the ERUN-SP4 adapts to diverse testing protocols.
The ERUN-SP4 is designed for field use with a rugged 500g body, large LCD display, and intuitive operation—no laboratory training required.
Key usability features include:
Automatic wavelength selection – no manual adjustment needed when measuring samples
One-key factory reset for quick troubleshooting
Password-protected system settings to prevent unauthorized configuration changes
PC data acquisition software included for data collection, storage, editing, and printing
Imported high-performance LED light source and silicon photoelectric sensor for reliable readings
Data power failure protection ensures records are not lost
The Type-C rechargeable lithium battery (7.4V 1500mAh) provides extended field operation, and the portable carrying case protects the instrument during transport.
The ERUN-SP4 is widely used for drinking water quality testing, surface water monitoring, and wastewater analysis across municipal, industrial, and environmental sectors.
Common applications include:
Municipal water treatment – monitoring source water, treatment processes, and finished drinking water
Environmental monitoring – surface water quality assessment in rivers, lakes, and reservoirs
Industrial wastewater – compliance testing and process control
Aquaculture – DO and pH monitoring for fish and shrimp farming
Agriculture – irrigation water quality and soil leachate analysis
Food and beverage – process water and ingredient water quality control
Every ERUN-SP4 ships with a complete accessory kit including electrodes, reagents, colorimetric tubes, and data acquisition software—everything needed to start testing immediately.
Standard configuration includes: host instrument, portable carrying case, reagents for common parameters (up to 10 parameter sets), colorimetric tubes (Ф25mm), specialized turbidity tubes, test tube racks, pipette gun, USB cable, pH composite electrode, conductivity electrode, dissolved oxygen electrode, temperature electrode, data acquisition software CD, instruction manual, certificate of conformity, and warranty card.
ERUN (Xi’an Erun Environmental Protection Technology Group) is a certified manufacturer with ISO 9001, ISO 14001, and ISO 45001 management system certifications, plus CE and RoHS product certifications.
With proven export capability to global markets including Southeast Asia, the Middle East, and Africa, ERUN combines Chinese manufacturing efficiency with international quality standards.
ERUN – Certified water quality analysis instruments, trusted worldwide.
Product Details and Purchasing Inquiries：https://www.erunwas.com/products-detail/id-250.html
