GGC-12CThe series of national standard COD intelligent reflux digestion equipment is designed completely in accordance with the basic principles of the standard HJ 828-2017 (replacing GB 11914-89) issued by the Ministry of Environmental Protection. It can effectively ensure the digestion process of reflux micro boiling constant temperature control heating for 2 hours. The preparation and addition of reagent solution are consistent with the requirements of HJ 828-2017 standard, which can ensureaccurateThe analysis results.

This instrument adopts microcomputer technology for timing control heating mode, and can simultaneously heat 12 250ml conical (straight large grinding mouth) bottles with all glass reflux devices; To achieve the goals of energy conservation, reducing power load, and improving efficiency.

The instrument uses a glass burr reflux tube instead of a spherical reflux tube, and uses air cooling instead of tap water cooling. This not only saves water and reduces storage space, but also standardizes the instrument and improves its safety during use; heatingThe module adopts infrared ceramic heating, with uniform heating and independent control.

The chemical solution preparation, operation, and COD calculation of the instrument fully comply with the national standard HJ 828-2017; Note: For COD water samples with a concentration of ≤ 50mg/L, the sampling volume can be appropriately increased when the sample concentration is low; For COD water samples with a concentration greater than 50mg/L, dilution of titrants and oxidants can be used to improve the measurementaccurateDegree; For COD water samples with a concentration greater than 700mg/L, dilution of the water sample concentration is required to complete the result determination; For water samples with high chloride ion content, the method in Appendix A of the national standard HJ 828-2017 can be used for determination.

[Functional Features]

※ Four fan convection cooling, significant cooling effect
※ LCD display, adjustable time, users can modify, set, and save by themselves
Using infrared ceramic independent heating, the heating speed is fast and uniform, and the service life is longer
※ Water saving, low thermal radiation, and small space occupation
※ Easy to operate, can effectively reduce costs and improve work efficiency

Technical indicators

Measurement range: 4-700mg/L, 700-1000mg/L (requires diluted water sample)

Measurement time: ≤ 150 minutes (can be set according to user needs)

Measurement error: Potassium hydrogen phthalate standard solution (500mg/L), relative standard deviation not exceeding 5.0%, industrial organic wastewater (500mg/L), relative standard deviation not exceeding 8.0%

※ Environmental temperature:- 5～40℃

※ Display mode: LCD display

※ Sample size for digestion: 12 per batch

※ Dissolution time: can be set according to user needs, 1-999 minutes

Heating power: 1800W（AC 220V±22V，50HZ）