GGC-12C COD Dissolution Apparatus

The GGC-12C series national standard COD intelligent reflux digestion instrument is designed entirely according to the Ministry of Environmental Protection's standard HJ 828—2017 (replacing GB 11914-89) on the basic principles, ensuring an effective reflux micro-boiling isothermal control heating process for 2 hours. The preparation and addition of reagent solutions are consistent with the requirements of standard HJ 828—2017, ensuring the accuracy of analytical results.

The instrument utilizes microcomputer technology for timing control heating, allowing simultaneous heating of up to 12 ground-glass回流 apparatus with 250ml cone-shaped (straight-bottom large ground) bottles; achieving the goals of energy saving, reducing electrical load, and improving efficiency.

The instrument uses glass burr回流 tubes instead of spherical reflux tubes, and replaces water cooling with air cooling, which saves water, reduces space requirements, standardizes the instrument, and also enhances the safety of instrument use; the heating module employs infrared ceramic heating for even heating and independent control.

For water samples with a Chemical Oxygen Demand (COD) greater than 700 mg/L, dilute the sample to complete the measurement; for water samples with high chloride ion content, refer to the method in Appendix A of National Standard HJ 828—2017 for determination.

Feature Highlights

Four-fan convection cooling, significant cooling effect
LCD display, adjustable time, user can modify, set, and save as desired
Infrared ceramic independent heating ensures quick and even temperature rise with an extended service life.
Low water and electricity consumption, minimal thermal radiation, and small space occupancy.
Easy to operate, effectively reducing costs and improving work efficiency.

Technical Specifications

※Measurement Range: 4～700 mg/L, 700～10,000 mg/L (Sample must be diluted)

Measurement Time: ≤150 minutes (time can be set according to customer's requirement)

※Measurement Error: Potassium Phthalate Standard Solution (500mg/L), relative standard deviation not more than 5.0%; Industrial Organic Wastewater (500mg/L), relative standard deviation not more than 8.0%

Ambient Temperature: -5 to 40℃

※Display Method: LCD Display

※Sample Count: 12 per batch

※Dissipation Time: Settable to 1-999 minutes according to customer's requirement

※Heating Power: 1800W (AC 220V±22V, 50Hz)