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Products
Portable water quality tester
Laboratory benchtop water quality analyzer
On-line water quality monitoring equipment
Reagent consumables
Application
Boiler water
Recirculating cooling water
Drinking water/tap water
Secondary drinking water supply plant
Farmland irrigation water
Sewage/waste water
Surface water(Rivers and Lakes, etc.)
Aquaculture water
pool water
News&Case
Company News
Industry information
Case
Services
After-sale
FAQ
Data download
About
Company Profile
Qualification Patents
History
Cooperative Clients
Contact
Contact
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23
2026.09
Dissolved Oxygen Water Quality Tester: Portable DO Meter Selection Guide for Aquaculture (CE/ISO/RoHS Certified)
When dissolved oxygen drops below 2.5 mg/L, most fish species suffer reduced feeding and growth. This guide compares optical vs. polarographic DO sensors with real accuracy data, explains aquaculture DO thresholds, and covers CE/RoHS/ISO 9001 compliance for exporters. Includes ERUN‑SP8‑ASC‑A5 specifications.
2026.09.23
22
2026.09
Pool Water Tester Export Guide: How to Choose a Multi-Parameter Analyzer with CE, ISO 9001 & RoHS Certification
Professional pool water tester manufacturer guide: covering chlorine, pH, turbidity, and temperature measurement standards and compliance requirements. CE, ISO 9001, RoHS certified for export markets. ERUN offers multi-parameter water quality monitoring solutions.
2026.09.22
21
2026.09
Drinking Water Quality Monitoring System: Complete Export Compliance Guide
Export-ready drinking water quality monitoring system with CE, ISO 9001, and RoHS certification. ERUN-WQS-6022 monitors pH, turbidity, conductivity, and residual chlorine in real time for municipal and industrial applications.
2026.09.21
20
2026.09
Online pH Sensor Water Analyzer: The CE & RoHS Certified Choice for Industrial Water Treatment
ERUN online pH sensor water analyzer with CE, ISO 9001 & RoHS certification. Digital sensor, RS485 Modbus, auto temp compensation, IP68. Reliable 24/7 pH monitoring for water treatment, wastewater & industrial applications.
2026.09.20
18
2026.09
How to Choose a Portable Water Quality Analyzer: 2026 Field Testing Selection Guide
A practical guide for environmental companies, wastewater plant operators, and university labs on choosing a portable water quality analyzer. Compare HJ method compliance, IP rating, battery life, data traceability, and ERUN-SP7/SP9 parameters. Includes 6 FAQs and a transparent selection framework.
2026.09.18
17
2026.09
Drinking Water Turbidity Meter Export Guide: CE, ISO 9001, and RoHS Certification
China turbidity meter manufacturer guide: CE, ISO 9001, RoHS certified drinking water turbidity meters. Compare ISO 7027 vs EPA 180.1, WHO limits, portable selection.
2026.09.17
16
2026.09
Cooling Water Analyzer: pH, Turbidity & Conductivity Monitoring Guide
Industrial cooling water analyzer measuring pH, turbidity & conductivity. CE, RoHS & ISO 9001 certified. Learn key monitoring parameters, standards & product specs for export markets. ERUN manufacturer.
2026.09.16
15
2026.09
Online Drinking Water Analyzer Export Guide: pH, Turbidity, Temperature & Residual Chlorine Compliance
Export-ready guide to online drinking water analyzers. Covers WHO parameter limits, CE/ISO 9001/RoHS certification requirements, multi-parameter integration, and the ERUN-WQS-6022 system for global water utilities.
2026.09.15
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