Overview
Second-generation product upgraded with integrated display for drinking and purified water. This product has been discontinued.

A portable rapid testing tool for tap water, purified water, bottled water, travel water, and aquarium water, designed for personal screening and comparison, not a substitute for regulatory laboratory testing.
This product has been discontinued.
Ask about parameters, interfaces, calibration, versions, customization or volume supply. The answer does not need to pass through layers of resellers.
A portable rapid testing tool for tap water, purified water, bottled water, travel water, and aquarium water, designed for personal screening and comparison, not a substitute for regulatory laboratory testing.
Second-generation product upgraded with integrated display for drinking and purified water. This product has been discontinued.
Standalone tester for drinking and purified water with direct results on screen. Portable multi-spectral water quality product for domestic water, field screening, water service, and aquaculture testing.
A portable rapid testing tool for tap water, purified water, bottled water, travel water, and aquarium water, designed for personal screening and comparison, not a substitute for regulatory laboratory testing.
Second-generation product upgraded with integrated display for drinking and purified water. This product has been discontinued.
— · Portable battery operation
Drinking and purified water · —
For new projects and procurement inquiries, use Water Detective 4.
The official Chinese document is currently shared by every language version.
Historical three-parameter workflow: TOC, COD, and TDS.
Standalone use, no phone required.
Integrated display, direct results.
Historical model only, no new orders accepted.
For new projects and procurement inquiries, use Water Detective 4.
This page is retained for identification of existing field devices.
Confirm legacy support and accessory availability case by case.
Use the product as part of a complete measurement workflow, not as an isolated component. Confirm the water matrix, target range and decision that the data must support.
Compact, reagent-free sensing for rivers, lakes, reservoirs and distributed environmental networks.
Track changes in water conditions continuously to support healthier stock and more responsive operations.
Integrated TDS and conductivity components for dispensers, purifiers, filter-life estimation and quality indication.
The applications above are common examples. If this measurement principle may solve a different problem in your field, we welcome a feasibility discussion.
Define the measurement objective and expected range.
Match the sensor, probe or analyzer to the real sample matrix.
Complete mechanical, electrical and communication integration.
Validate results with reference samples before routine operation.
Validate the complete system with representative samples. Record the reference method, temperature and installation conditions. Recheck after cleaning, replacement or process changes, and define a maintenance interval from actual fouling rather than a fixed assumption.
View current Water Detective 4 →The product platform is defined, but range, calibration and installation must still be confirmed against the actual water matrix and project objective.
Confirm power, interface, cable length, enclosure, sampling frequency, probe position and the host system data format.
Compare representative samples with an agreed reference method and document the acceptance criteria before commissioning.
Yes. Ask for the current ordering specification and describe your application so the correct materials can be supplied.

Personal/Home Portable Water Quality Testing Pen
A portable rapid testing tool for tap water, purified water, bottled water, travel water, and aquarium water, designed for personal screening and comparison, not a substitute for regulatory laboratory testing.
Learn More →Personal/Home Portable Water Quality Testing Pen
A portable rapid testing tool for tap water, purified water, bottled water, travel water, and aquarium water, designed for personal screening and comparison, not a substitute for regulatory laboratory testing.
This product has been discontinued.
Learn More →
Personal/Home Portable Water Quality Testing Pen
A portable rapid testing tool for tap water, purified water, bottled water, travel water, and aquarium water, designed for personal screening and comparison, not a substitute for regulatory laboratory testing.
This product has been discontinued.
Learn More →Tell us your target parameters, water matrix, interface and annual volume. Our engineering team will recommend a practical configuration.
Tell us what you need to measure. Our product and application team will reply by email.