HACH Colorimeter

Overview

HACH Colorimeter is a portable, single-wavelength photometric instrument from Hach’s Pocket Colorimeter series, built for fast, accurate water quality testing in laboratories, water treatment facilities, and field settings. Using LED-based colorimetric technology, it delivers direct digital readings of specific chemical parameters — such as chlorine, nitrate, iron, phosphate, or ammonia, depending on the wavelength model and test kit used — without requiring a full benchtop spectrophotometer.

As an experienced supply partner for HACH, Seven Star LLC proudly supplies the HACH Colorimeter and the full range of compatible Hach reagent test kits to water treatment facilities, laboratories, and environmental monitoring teams across Oman and the GCC. Every unit is matched to Hach part numbers, ensuring genuine calibration and technical enquiry support.

Operating Principle

The colorimeter works by passing a stable LED light source of a specific wavelength through a water sample that has been treated with a Hach reagent, which produces a color change proportional to the concentration of the target chemical parameter. A photodetector measures how much of that light the sample absorbs, and the instrument converts this absorbance reading into a direct concentration value displayed on its digital screen, eliminating the need for manual color-chart comparison.

Because the instrument uses a fixed, wavelength-specific LED source rather than a broadband lamp, it delivers a stable, repeatable light output that supports consistent measurement accuracy across many test cycles, without the lamp drift that can affect less specialized colorimetric instruments over time. This stability is central to why the Pocket Colorimeter series remains a trusted standard for routine water testing.

Engineering Design of the HACH Colorimeter

The HACH Colorimeter is housed in a compact, rugged body designed for portability, with a battery-powered design that supports extended field use away from laboratory power. Its digital display presents results in clear, easy-to-read numeric form, and its pre-programmed test methods and simplified menu navigation reduce the training required for a technician to obtain a reliable reading.

The instrument is designed to work seamlessly with a wide range of Hach test kits and reagent sets, giving users flexibility to test for different parameters with the same base unit. Its rugged construction is built to endure demanding field conditions while preserving the measurement accuracy and repeatability critical water analysis applications require.

Key Features

The HACH Colorimeter brings laboratory-grade accuracy to a compact, field-ready instrument.

• The colorimeter provides direct digital readings, eliminating the guesswork of manual color-chart comparison.
• Its LED-based light source delivers stable, repeatable measurements with minimal drift over time.
• Compact, rugged, battery-powered design supports both laboratory and demanding field use.
• Compatibility with a wide range of Hach test kits supports testing for chlorine, nitrate, iron, phosphate, ammonia, and more.
• Pre-programmed methods and simplified menus reduce training requirements for new technicians.
• Quick calibration options keep the instrument accurate across extended use periods.
• Its digital display presents clear, easy-to-read results for fast decision-making in the field.
• The instrument offers a cost-effective alternative to complex benchtop laboratory spectrophotometers.

Industrial Applications

Across Oman’s municipal water testing, environmental monitoring, and industrial water management sectors, the HACH Colorimeter supports routine and on-demand testing of treated and process water at treatment plants, cooling towers, and RO desalination facilities. Facilities in Muscat and the Sohar and Salalah economic zones rely on this class of field-portable colorimeter to verify water quality parameters without sending samples to an off-site laboratory.

With engineering support in Muscat, Seven Star LLC supplies the HACH Colorimeter and compatible reagent test kits to water treatment operators, environmental consultancies, and educational institutions throughout Oman and the GCC, supporting both routine compliance testing and one-off field investigation work.

Technical Specifications

The table below summarizes the key specifications of the HACH Colorimeter.

Why Choose Seven Star LLC for the HACH Pocket Colorimeter

A single-wavelength LED colorimeter is only as accurate as the reagent kit and calibration behind it, and the correct kit varies by the specific parameter being tested, whether that is chlorine, nitrate, iron, phosphate, or ammonia. Before recommending a configuration, Seven Star LLC confirms which parameters your facility actually needs to monitor and supplies the matching reagent kit and calibration standards together, rather than leaving your team to discover a mismatch after the instrument arrives. This matters for water treatment plants, desalination facilities, and process water programs across Oman and the wider GCC, where a colorimeter reading feeds directly into dosing and compliance decisions.

We also help facilities plan reagent consumption realistically, since LED colorimeters are typically used for frequent spot-checks and field verification alongside continuous online analyzers, and running out of a specific reagent mid-testing-cycle is a common, avoidable gap. Our team can advise on battery and reagent shelf-life planning so your field kits stay ready, and we are glad to walk through which parameters genuinely need a portable colorimeter versus a lab-based method for your specific water quality program.

Request a Quote for HACH Colorimeter

Seven Star LLC invites water treatment operators and environmental testing teams across Oman and the GCC to submit a formal RFQ for the HACH Colorimeter and compatible Hach reagent test kits. We provide full technical datasheets on request, and our instrumentation division is available to help select the right wavelength model and test kit for your specific water parameters. Backed by manufacturer datasheet documentation, Seven Star LLC supplies calibrated instruments on request, with manufacturer documentation and technical support for model selection.

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