1、 Product Introduction:

According to the "Determination of Chemical Oxygen Demand in Water Quality - Potassium Dichromate Method" (GB11914-89), this standard does not apply to saltwater with a chloride ion concentration greater than 1000mg/L (diluted). When the chloride ion content exceeds 1000mg/L, the minimum allowable limit for COD is 250mg/L, and accuracy below this value is unreliable. Therefore, GB11914-89 is not applicable to high chloride ion wastewater. Our company has designed the TC-100F high chloride COD digester based on the guidance of the new industry standard HJ/T70-2001 and the actual needs of users. This instrument eliminates the interference of high chloride ion content on COD determination and can be used asThe chloride ion content is less than20000mg/LChemical Oxygen Demand in High Chlorine Wastewater(COD)Determination ofStandard instrument, suitable for the determination of COD in wastewater from oil fields, coastal refineries, oil depots, chlor alkali plants, etc.

2、 Main features:

1According to the requirements of industry standard HJ/T70-2001, nitrogen gas circulation throughout the digestion process meets the technical requirements

2. Equipped with 4 flow meters (high-end), the nitrogen flow rate can be individually controlled for each sample, saving nitrogen and improving experimental accuracy

3. Using graphite plate heating, digestion experiments can be conducted simultaneously for 4 samples and 1 comparative sample

4. Built in high-power fan, using air cooling technology instead of water cooling, combined with glass burr condensation reflux pipe cooling, effectively saves water and energy

5Using a specially designed triangular flask for digestion, it can be directly titrated after digestion, making it convenient for experimental personnel to operate

3、 Technical indicators:

1. Anti chlorine interference: 1000-20000mg/L (if higher, please follow HJ/T132-2003 experiment)

2. Detection limit: 30mg/L

3. Nitrogen flow rate: 5-60mL/min

4. Measurement range: ≤ 1000mg/L (greater than dilution)

5. Dissolving time: 2 hours (with a time adjustment amplitude of 10 minutes)

6. Dissolving volume: 250mL

7. Measurement error: ≤ 500mg/L, relative standard deviation not exceeding 5.0%; ≤1000mg/L， The relative standard deviation is not greater than 8.0%

8. Work environment:（5 ~ 40）℃； Relative humidity<85%(No condensation);

9. Heating power: 1400W (220V, 50HZ)

4、 Product configuration

1. Host (4 flow meters) 1 unit

2. Six triangular flasks (250mL)

3. 6 condensate reflux pipes

4. 5 flask clamps

5. Grinding mouth air duct bend pipe 4 pieces

6. 4 airway tubes

7. 4 silicone hoses

8. 1 power cord

9. 1 copy of instruction manual

10. 1 certificate of conformity

11. 1 warranty card