Joke Collection Website - Cold jokes - Drying of water samples occurred in the COD experiment
Drying of water samples occurred in the COD experiment
What a big joke, water can be added during the heating process, haha.
Check your experimental equipment and methods when it comes to drying.
1. Whether the sample size is sufficient and strictly in accordance with the national standard.
2. Whether the flask is leaking, whether the reflux device is smooth (the direction is downward in and up out), and whether the water flow is stable.
3. Whether the experimental equipment is complete and intact, and a beaker must be placed above the condenser tube.
4. Is the heating temperature too high? The temperature can be higher at the beginning of digestion. After boiling, control the temperature so that it can bubble. Remember to add glass beads. It's probably because the temperature of your electric stove is too high.
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