The COD Digestion System is a high-performance laboratory apparatus designed for the rapid and accurate digestion of samples to determine Chemical Oxygen Demand (COD) in water and wastewater. This system simplifies the preparation of samples using closed reflux, colorimetric, or titrimetric methods by providing precise temperature control and uniform heating, ensuring reliable and reproducible results. This device typically uses pre-filled COD reagent vials and operates by heating samples at 150 °C for 2 hours, following standard methods such as USEPA 410.4, ISO 15705, and Standard Methods 5220D. It can  digest multiple samples simultaneously (commonly 6, 12, or 25 positions), and often includes features like digital timers, PID temperature controllers, and built-in safety systems. Modern systems may offer automatic shutdown, audible alarms, and chemical-resistant construction, making them ideal for environmental labs, wastewater treatment plants, and educational institutions.

Features of COD Digestion System

  • Stainless steel insert rack to handle.
  • COD Digestion tubes.
  • MS rack to keep Air condensers.
  • MS rack with hole to place insert rack with tubes for adding reagents in water.
  • Stainless steel water tank.

 

Technical Specifications

Model DAN.N15CT.01 (TOUCH SCREEN CONTROLLER)
No of samples 15
Tube dimension 36 x 200 mm
Tube capacity 150ml
Tube material Glass with ground joint
Reflux condenser Air condenser with ground joint
Reflux condenser dimension 640mm
Heating block Extruded Aluminium block
Well depth 90mm
Material of construction of housing MS with powder coated finish
Heater Casted Aluminium alloy Heater
Heater wattage 2000 W
Temperature controller PID controller
Process controller 4.3” TFT with touch screen
Temperature range 50 degree to 300 degree
Temperature accuracy +/- 1%
Temperature sensor K type thermocouple
Block insulation Ceramic wool
No of Programs 5 program
No of steps 5 steps
Type of program Time and Temperature
Feature touch membrane key pad Power and Heater
Over voltage protection By circuit breaker
Electrical requirement 230V/50Hz/10A
Unit dimension 56 x 14 x 36 Inches (L x B x H)