UPW-C12W COD Reflux Digestion Device Introduction: The design and development are fully based on the latest environmental protection standard of the People's Republic of China, "HJ828-2017 Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method" (which replaced the original national standard "GB 11914-89 Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method" in 2017), ensuring reliable and accurate analysis results. characteristic: 1. The instrument adopts a 12 bit microcrystalline heating digestion hole, which is acid, alkali, and corrosion-resistant, with uniform heating, greatly improving work efficiency. 2. 12 samples can be heated simultaneously, using a 250mL conical flask as the digestion container specified by the national standard, with good bottom contact, uniform heating, easy operation, and conducive to titration mixing. 3. Equipped with a 7-inch color touch screen, various parameters are displayed intuitively, and heating temperature and countdown are observed in real-time. 4. Adopting a new generation of intelligent temperature controller and precision PID temperature control technology, the temperature control accuracy is high, the heating is rapid, and the digestion temperature is guaranteed. 5. The digestion time can be flexibly set, and after digestion is completed, the instrument automatically stops heating without manual supervision. 6. The condensation method adopts a dual cooling method of air cooling and water cooling, with two high air volume axial fans for heat dissipation, improving efficiency and ensuring condensation effect. 7. The reflux condenser tube has a horn opening, which prevents the addition of reagents from flowing out and facilitates cleaning after digestion. After the sample digestion is completed, the instrument fan can continue to work, assisting in accelerating the cooling of the sample and shortening the overall detection time. The number of opposing spherical condensation bubbles extending from the condenser wall has increased from 2 to 3, greatly enhancing the condensation effect. Technical parameters: Measurement range: 0-1000mg/L (measured after dilution of high concentration water samples) Measurement error: The relative standard deviation of potassium hydrogen phthalate standard solution (500mg/L) is ≤ 5.0%; The relative standard deviation of industrial organic wastewater (500mg/L) is ≤ 8.0% Measurement time: ≤ 2h Display mode: 7-inch LCD touch screen Heating power: 3000W (AC220V ± 22V, 50Hz) Time setting: 0-9999s Heating method: Microcrystalline heating Cooling method: water cooling+air cooling Temperature control accuracy: ± 1 ℃ Condenser tube: glass burr reflux tube Dissolve sample size: 12 digits
Introduction: The design and development are fully based on the latest environmental protection standard of the People's Republic of China, "HJ828-2017 Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method" (which replaced the original national standard "GB 11914-89 Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method" in 2017), ensuring reliable and accurate analysis results.
