Introduction: The SH series of national standard COD intelligent reflux digestion instrument is designed in full accordance with the basic principles of the standard HJ 828-2017 (instead of GB 11914-89) issued by the Ministry of Environmental Protection, which can effectively ensure the digestion of the reflux micro-boiling constant temperature control heating for 2 hours. The process, the preparation of the reagent solution and the addition amount are consistent with the requirements of the HJ 828-2017 standard, which can ensure accurate analysis results. Features: 1. With touch color screen, one-key selection of Chinese menu 2. Single group single control, integrated mold design, uniform temperature 3. According to the required power, the time setting can be adjusted arbitrarily 4. With one-key start and single independent start function, it is convenient to start energy saving 5. Condensation reflux mode adopts air-cooled and water-cooled (optional) dual modes 6. The principle of closed air cooling with large air volume ensures the consistency of temperature in each channel 7. After the digestion is completed, the instrument will automatically beep to remind and stop heating 8. It has the characteristics of environmental protection and energy saving, small heat radiation, small space occupation, low cost, high efficiency, etc. Technical Index： Measuring range: 4～700mg/L, 700～10000mg/L (water sample must be diluted) Measuring time: ≤150 minutes (the time can be set according to user needs) Measurement error: standard solution of potassium hydrogen phthalate (500mg/L), relative standard deviation not greater than 5.0%, industrial wastewater (500mg/L), relative standard deviation not greater than 8.0% Ambient temperature: -5～45℃ Display mode: 7-inch high-definition touch screen interface Number of digestion samples: 6 samples/10 samples/batch (set the number of digestion arbitrarily) Digestion time: The time can be set according to user needs, 1-999 minutes Fan setting: automatic/manual Heating power: 3000W (AC 220V±22V, 50HZ) Whole machine weight: 32KG
Introduction: The SH series of national standard COD intelligent reflux digestion instrument is designed in full accordance with the basic principles of the standard HJ 828-2017 (instead of GB 11914-89) issued by the Ministry of Environmental Protection, which can effectively ensure the digestion of the reflux micro-boiling constant temperature control heating for 2 hours. The process, the preparation of the reagent solution and the addition amount are consistent with the requirements of the HJ 828-2017 standard, which can ensure accurate analysis results.
