User Manual Q&AAnswer
Mar 01, 2025 - 04:55 AM
To use the Impex Produkter NANOCOLOR COD 160 Hg-free Chemical Oxygen Demand test kit, follow these steps:
1. Pretreatment:
- Open the cartridge packaging and take out a cartridge.
- Dip the cartridge into the test sample and slowly draw up the plunger until about 5 mL of the sample solution is inside the cartridge.
- Shake the cartridge well for 30 seconds.
- Carefully press out the sample solution, rejecting the first drops (approximately 0.5 mL).
- Pour the remaining clear solution into an empty reaction tube.
2. Digestion at 148 °C:
- Open a COD test tube and slowly add 2.0 mL of the pretreated sample solution from the reaction tube without mixing, so that two separate layers are formed.
- xxxx the cap securely onto the test tube, hold the tube by the cap, and place it into the safety bottle.
- Shake the tube (caution, it becomes hot) and then place it into the heating block.
- Start the heating program.
- After 2 hours, remove the test tube from the heating block, allow it to cool down to room temperature, and shake it gently several times.
- Clean the outside of the test tube and measure the absorbance. Adjust the photometer to zero using the blank value "NULL".
3. Short time COD at 160 °C:
- Follow the same steps as for digestion at 148 °C, but reduce the heating time to 30 minutes.
- After 30 minutes, remove the test tube from the heating block, allow it to cool down to room temperature, and shake it gently several times.
- Clean the outside of the test tube and measure the absorbance. Adjust the photometer to zero using the blank value "NULL".
4. Measurement:
- Follow the measurement instructions provided in the manual for your specific NANOCOLOR® photometer or PF-12.
- For photometers of other manufacturers, check if measurement of round glass tubes is possible and verify the factor for each type of instrument by measuring standard solutions.
Please note that this is a general overview of the usage instructions. For more detailed information and safety precautions, refer to the Impex Produkter NANOCOLOR COD 160 Hg-free Chemical Oxygen Demand User Manual.
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