Environmental Express TKN 54-Well Digestion System

Eliminate the complexity and manual tracking from your Total Kjeldahl Nitrogen (TKN) workflows. The Environmental Express TKN 54-Well Digestion System, available through Delta Sci, delivers precise, automated temperature profiling engineered specifically for high-throughput environmental and analytical chemistry laboratories. Built with premium corrosion-resistant materials and an isolated external controller, this system maximizes operational safety, limits acid degradation, and guarantees highly repeatable digestion parameters for regulatory compliance.

Automated, Multi-Stage Temperature Profiling

Achieving consistent TKN digestion requires strict adherence to thermal profiles. This system features an advanced, fully programmable controller that automates standard procedures to minimize technician intervention. The default, built-in profile handles the standard multi-stage curve seamlessly:

• Initial Organic Breakdown: Ramps automatically to 160°C and stabilizes for a 60-minute hold.

• High-Temperature Digestion Phase: Ramps uniformly to 380°C over 60 minutes and sustains peak temperature for an additional 30 minutes.

• Smart Auto-Shutoff: Immediately powers down the heating block upon completion, preventing over-digestion and optimizing energy usage.

For custom SOPs or alternative analytical methods, laboratory professionals can easily modify temperatures, ramp rates, and hold periods. The intuitive controller supports flexible multi-stage configurations, allowing up to 20 independent processing steps to be programmed per digestion cycle.

Heavy-Duty Construction for Corrosive Lab Environments

Acid digestion processes create exceptionally harsh, corrosive environments that rapidly degrade standard laboratory equipment. The Environmental Express TKN block is encased entirely in premium 316 stainless steel to ensure structural longevity under severe conditions. Furthermore, both the tube rack and cooling rack are constructed from 316 stainless steel, ensuring excellent chemical resistance and long-term durability against intensive acid exposure.

Isolated Controller for Advanced Safety & Reliability

To prevent premature electronic failures caused by aggressive acid fumes, the system architecture separates the controller from the high-temperature block. Lab professionals are advised to position the independent controller completely outside the fume hood. This external placement minimizes exposure to acid vapors, protects critical microprocessor components, extends equipment lifespan, and allows safe adjustments during live digestion runs.

Key Performance Features

• High-Throughput Block Capacity: 54-well configuration handles large sample batches efficiently.

• Pre-Programmed TKN Sequence: Out-of-the-box automation for standard 160°C and 380°C thermal ramp profiles.

• Advanced Customization: Program up to 20 distinct thermal stages for alternative analytical methods.

• Rugged 316 Stainless Steel Build: Complete enclosure, tube rack, and cooling rack withstand aggressive chemical wear.

• Remote External Controller: Safely resides outside the fume hood to eliminate chemical corrosion risks.

Technical Specifications

• Well Capacity: 54 Wells

• Application Range: Total Kjeldahl Nitrogen (TKN) Digestion & Custom Methods

• Material Composition: Premium 316-Grade Stainless Steel (Block, Tube Rack, and Cooling Rack)

• Max Programmable Steps: Up to 20 steps per digestion profile

• Default Profiles: Pre-programmed TKN ramp (160°C & 380°C holds)

• Controller Design: Independent, standalone unit (external fume hood placement recommended)