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TC-100D standard COD digester | air-cooled COD digester
The chemical solution preparation, operation, and COD calculation of the instrument fully comply with GB11914-89. For COD water samples below 50mg/L,
Product details
TC-100D standard COD digester | air-cooled COD digester
Brief introduction
※ The national standard GB11914-89 specifies the analytical methods for water quality, including chemical oxygen demand (COD)（cr）The measurement steps strictly specify the conditions and indicators of the method, such as heating and digestion time, solution acidity, oxidant and catalyst dosage. It is obvious that the water quality COD（cr）There are strict conditions for the measurement, and any operation that violates these conditions will affect the accuracy of the measurement.
※ TC-100D standard COD digester，Following the basic principles of international standards (ISO) and national standards (GB11914-89), the digestion operation with reflux heating and micro boiling for 2 hours is ensured. The preparation and addition of reagent solutions are consistent with the national standard method, ensuring reliable and accurate analysis results.
※ TC-100D standard COD digesterBy using microcomputer technology for timed control of the heating electric furnace, 8 250ML conical digestion reflux devices can be heated simultaneously. To achieve the goals of energy conservation, reducing power load, and improving efficiency.
※ The TC-100D standard COD digester heating panel uses ceramic glass as the heating carrier and hasThe coefficient of thermal expansion can be adjusted over a wide range, it is resistant to chemical corrosion, wear-resistant, has good thermal stability, high operating temperature, and good temperature uniformity;The use of glass burr reflux pipes instead of spherical reflux pipes, and the use of air cooling technology instead of tap water reflux cooling, with static water assisting cooling at the end of the condenser pipe, can not only save water and standardize the instrument, but also improve the safety of instrument use.
※ The chemical solution preparation, operation, and COD calculation of the instrument fully comply with GB11914-89. COD water samples below 50mg/L can be improved in accuracy by diluting titrants and oxidants, while COD water samples above 700mg/L can be determined by diluting the water sample proportionally.
2、 Technical specifications
1. Measurement range: 10-700mg/L, diluted water samples greater than 700mg/L for measurement
2. Dissolving time: 10 minutes -2 hours and 30 minutes (users can choose their own heating time) (10 minutes in increments)
3. Measurement error: Potassium hydrogen phthalate standard solution (500mg/L), relative standard deviation not exceeding 5.0%;Industrial organic wastewater (500mg/L), with a relative standard deviation not exceeding 8.0%
4. Dissolve 8 samples (using a 250mL conical flask with a 24 # grinding mouth)
5. Environmental temperature: ≤ 35 ℃
6. Heating power: ≤ 1600W (AC 220V, 50HZ, users can choose their own heating power)
7. Instrument size: 45cm (L) * 35cm (W) * 65cm (H)
3、 Performance characteristics
1. The cooling adopts air cooling technology and uses high-power dual fan cooling to ensure the digestion cooling reflux effect.
2. The wavy strip heating wire of the flat electric furnace plate is made of a new type of rare earth alloy material, which has an extremely long service life. The surface of the electric furnace plate is covered with a glass panel that can withstand high temperatures up to 800 ℃. When heated, the surface of the electric furnace heats up evenly, and the heating and cooling rates are fast.
3. The electric furnace plate uses a new type of high-temperature resistant inorganic environmentally friendly insulation material, which has low heat loss in the bottom plate and surrounding areas, uniform heating and thermal conductivity, and higher thermal efficiency.
4. Flat electric furnace plate with heat-resistant glass panel that is flat, smooth, and easy to clean; If the surface is contaminated, simply wipe it dry with a cloth to reduce damage to the instrument caused by improper operation.
5. The improved glass burr reflux tube and heat dissipation system ensure the parallelism and accuracy of the sample digestion results due to its excellent digestion reflux effect.
6. Corresponding to different heating powers selected by the user, the surface heating temperature of the electric furnace can be displayed.
7. The digestion time can be set. After digestion is completed, the instrument automatically stops heating, and the instrument fan continues to work for half an hour to assist in sample cooling. It can be left unattended.
8. Energy and water conservation, safety and reliability have improved the work efficiency of operators.
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