Laboratory often because of long experimental time, large number of personnel and experimental process produce some harmful gases, resulting in air pollution, adverse to human health. In order to prevent laboratory staff from inhaling or ingesting toxic, pathogenic or unknown toxic chemicals and organic gases, laboratory ventilation should be good, if necessary, air conditioning should be installed. Ventilation equipment includes ventilation cabinet, ventilation hood or partial ventilation device. In addition to those mentioned above, attention should be paid to the fact that the fume hood for organic solvent pretreatment and electric furnace pretreatment should be arranged in different laboratories, and the local exhaust device and hood must have sufficient power, otherwise it is difficult to meet the requirements in actual work.
2. Humidity and temperature:
The laboratory requires proper temperature and humidity. Indoor microclimate, including temperature, humidity and airflow velocity, has an impact on lab personnel and equipment. The optimum temperature in summer should be 18-28 C, 16-20 C in winter, and the humidity should be between 30百分比 (winter) and 70百分比 (summer). Except for special laboratories, temperature and humidity have little effect on most physical and chemical experiments, but the balance room and precision instrument room should control the temperature and humidity as needed.
It is very important to keep the laboratory clean. Dust in the outdoor atmosphere will enter the laboratory during ventilation. The high dust content and unclean air in the experiment will not only affect the test results, but also cause obstacles, even short circuit or other potential hazards when the particles fall on the surface of the instrument and equipment components. Clean laboratory is to spend money, the proposal is not special needs can not carry out clean laboratory design, if there is a need for large precision instrument room, special laboratory design, generally meet the requirements of ten thousand purification can be. If there are multiple clean laboratories, the exhaust and exhaust system should be designed independently and used independently.