Hach TNTplus® Spectrophotometer Chemistry, Total Alkalinity

The Hach TNT870 Alkalinity (Total) TNTplus® Vial Test is a ready-to-use reagent system designed for the rapid and accurate photometric determination of total alkalinity in water samples. Engineered for use with Hach DR-series spectrophotometers, this test simplifies routine alkalinity analysis by eliminating the need for traditional titration methods.

Using Hach TNTplus® Direct Read Technology, the procedure is straightforward: add the sample and indicator to the pre-dosed reagent vial, invert to mix, and place the vial into a compatible Hach spectrophotometer. The barcoded vial automatically identifies the test method, allowing the instrument to perform the measurement and display alkalinity results directly in mg/L CaCO₃. This automated process reduces analysis time, improves reproducibility, and minimizes the risk of human error.

The TNT870 test kit offers a measurement range of 25–400 mg/L CaCO₃ and includes 25 reagent vials, making it ideal for routine monitoring of alkalinity in drinking water, wastewater, boiler water, cooling water systems, and industrial process water. The innovative TNTplus vial design enhances safety and convenience by reducing reagent handling, contamination risks, and laboratory waste.

Each reagent vial features a 2D barcode containing batch number and expiry information, enabling full traceability and automatic quality verification by the spectrophotometer. This ensures reliable results and simplifies compliance with laboratory quality assurance protocols.

Key Features

• Photometric determination of total alkalinity (CaCO₃)
• Measurement range: 25–400 mg/L CaCO₃
• Ready-to-use TNTplus reagent vials for simplified testing
• Automatic method recognition via barcoded vials
• Compatible with Hach DR1900, DR3900, DR6000, DR2800, DR3800, and DR5000 spectrophotometers
• Eliminates the need for traditional titration and glassware
• Reduces reagent handling and contamination risk
• Provides traceability through batch and expiry barcode data
• Includes 25 tests per kit

Applications

• Drinking and potable water monitoring
• Wastewater treatment and environmental testing
• Boiler and cooling water systems
• Industrial water treatment processes
• Aquaculture and recreational water monitoring
• Municipal water treatment plants
• QA/QC laboratory testing

Specifications

Compared with traditional titration-based alkalinity testing, TNTplus® vial chemistry provides faster analysis, improved safety, and more consistent results. The integrated barcode system enables automatic method detection, result verification, and reagent traceability, ensuring reliable water quality testing with minimal operator intervention.