The Hanna Instruments HI93703-11 is a portable, ISO 7027-compliant turbidity meter engineered for precision water quality testing in both field and laboratory environments. Using an advanced infrared LED-based optical system, this meter provides stable and interference-resistant readings—even in low turbidity samples. With a real-time clock, data logging for up to 199 readings, and USB PC connectivity, this turbidity meter is ideal for professional monitoring in drinking water, wastewater, and environmental applications.
Key Features
Accurate Single Beam Detection – Utilizes a 90° light detector for reliable turbidity measurements across a wide 0.00 to 1000 FTU range.
ISO 7027 Method Compliance – Infrared light source eliminates color interference for consistent and accurate results. Displays results in FTU, equivalent to NTU.
Three-Point Calibration – Calibrate with 0, 10, and 500 FTU standards to ensure ongoing measurement accuracy and compensate for LED light source drift.
Data Logging with Real-Time Clock – Automatically records measurements with timestamps. Easily export logged data to a PC via USB using HI92000 software.
Certified Primary Turbidity Standards – Comes with reusable, AMCO AEPA-1 standards recognized by the USEPA for turbidity calibration traceable to NIST.
Last Calibration Recall – Instantly access the last calibration date using the onboard memory and "DATE" key function.
Battery Life Monitoring – Visual "LO BAT" icon notifies users of remaining power. Unit performs up to 900 readings before battery replacement is required.
Why Turbidity Matters
Turbidity is a critical indicator of water quality and a frontline metric in drinking water safety, aquatic monitoring, and wastewater regulation. High turbidity may obscure microbial contamination and interfere with treatment processes. This meter supports ISO-standard infrared turbidity measurement for highly accurate results, unaffected by sample color.
Optical System and Measurement Principle
The HI93703-11’s optical design features a high-efficiency LED light source and a right-angle silicon detector. This configuration minimizes stray light and enhances accuracy, particularly at low turbidity levels. The 25mm optical glass cuvettes ensure measurement repeatability and system stability over time.
Calibration & Traceability
- Supplied standards: 0, 10, and 500 FTU AMCO AEPA-1 solutions
- Certified values with NIST traceability
- Lot number and expiration printed on each vial
Protective Accessories
- Includes light-tight, break-resistant storage containers for cuvettes and calibration standards
- Protects glassware from contamination and damage
