1、 Product Introduction:

According to the "Determination of Chemical Oxygen Demand in Water Quality - Potassium Dichromate Method" (GB11914-89), this method is not applicable to saltwater with a chloride ion concentration greater than 1000mg/L (diluted). When the chloride ion content exceeds 1000mg/L, the low allowable limit of COD zu (i) 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 biao zhunHJ/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 ofBiao Zun instrument is suitable for the determination of COD in wastewater from oil fields, coastal refineries, oil depots, chlor alkali plants, and other facilities.

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 4/8 flow meters (high-end), it can automatically control the nitrogen flow rate for each sample, saving nitrogen and improving experimental accuracy

3. Using graphite plate heating, digestion experiments can be conducted simultaneously for 4/8 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 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, with a relative deviation of no more than 5.0%; ≤ 1000mg/L, with a relative deviation of no more than 8.0%

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

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

4、 Product configuration

1. Host (4/8 flow meters) 1 unit

2. Triangle flask (250mL) 6/8 pieces

3. 6/8 condensing reflux pipes

4. Grinding mouth air duct bend pipe 4/8 pieces

5. 4/8 airway tubes

6. 4/8 silicone hoses

7. 1 power cord

8. 1 copy of instruction manual

9. 1 certificate of conformity

10. 1 warranty card