1. Do a good job of protecting hands and face
During the heating process of the sample, the hot water in the waterproof bath splashes out and burns the hands and eyes. Before the operation, it is necessary to protect the hands and face, and wear gloves and goggles.
2. Ensure good ventilation
In order to prevent some vapors, gases and particles (smoke, soot, dust and air suspension) from being loaded into the instrument to affect the accuracy of the experiment, a fume hood, fume hood or local ventilation method is required to operate, and pollute substances Remove.
3. Do not move the nitrogen blowing instrument
Do not move the nitrogen blowing device during the test, and the test device is in a high-temperature heating state to prevent burns.
4. Use a three-wire grounded power supply
The power of the nitrogen blowing instrument is relatively large, and a three-wire grounding power supply must be used to ensure the safety of electricity.
5. Do not open the water bath shell with power on
In the course of the experiment, the instrument is working with electricity. If the material in the waterproof bath is in the state of leakage, electric shock accidents, which may be dangerous, please do not open the water bath shell with electricity.
6. Non-professionals are prohibited from overhauling the instrument
The maintenance work of the nitrogen blowing device should be carried out by professionals. Because its internal structure is extremely complicated, improper replacement of components may cause damage to the nitrogen blowing device or cause safety hazards.
7. It is not suitable to detect highly flammable substances
Highly flammable substances, such as petroleum ether, are prone to explode under high temperature heating test. Therefore, the nitrogen blowing instrument is not suitable for detecting highly flammable substances.
8. Do not use acidic or alkaline substances as heating medium
Do not use organic solvents as heating media. Organic solvents are volatile and neurotoxic. Inhalation can cause dizziness, headache, insomnia, dreaminess, drowsiness, weakness, memory loss, loss of appetite, weight loss, excessive sweating, emotional instability, and heartbeat. Phenomena such as acceleration or deceleration. It is best to use distilled water and deionized water as the heating medium, which is not only safe, but also can effectively prevent the formation of scale on the wall of the water bath.
9. Wash the bath frequently
After the experiment is completed, without heating, add algaecide to the water in the water bath to prevent biological contamination. Acidic algaecides should not be used, and it should be ensured that the algaecides used will not affect the samples to be processed. After contact or exposure to acidic materials, steam or samples, they should be cleaned immediately, neutralized with a moderate sodium bicarbonate solution or other similar solutions, and then rinsed with water. Prolonged exposure to acidic substances will damage the instrument. The water in the water bath is recommended to be changed once a week, and the longest is not more than one month.