1, general requirements
(1) mutual interference equipment should be separated, such as inorganic instruments and organic instruments;
(2) Equipment installation should consider the placement of auxiliary equipment and the convenience of equipment maintenance;
(3) The exhaust of the equipment shall be equipped with local exhaust devices according to the specific conditions. For example, the exhaust gas of inorganic high-temperature equipment needs stainless steel atomic absorption hood, and the exhaust gas of organic instruments generally uses universal exhaust hood.
2. Environmental requirements
① Temperature and humidity requirements: the temperature and humidity requirements of the precision instrument room must first meet the requirements of the standard methods corresponding to the activities in this area, and secondly meet the requirements of the instrument manufacturers on the equipment use environment (generally reflected in the instrument manual). If there is no clear requirement for both, the general temperature of the conventional precision instrument room should be (15~30)℃, and it is better to control it at (18 ~ 25) if possible. Individual equipment requires constant temperature and humidity. At this time, according to the temperature and humidity range and accuracy to be controlled, precision air conditioning or a special constant temperature and humidity room should be built to meet the requirements.
(2) Other environmental requirements, such as shock-proof, dust-proof, noise reduction, corrosion prevention, and prevention of harmful gas intrusion. Generally, it is needed by the precision instrument room, and individual equipment needs to consider electromagnetic interference, such as nuclear magnetic resonance vibration equipment. Different measures need to be taken to avoid different environmental disturbances, and the most economical and effective measures need to be selected in combination with the surrounding conditions.
3. Power distribution requirements
① The power distribution in laboratory is different from that in family or general industry. Because many testing equipment used in the laboratory convert electrical signals into corresponding reaction results or the fluctuation of electrical signals will affect the results, the distribution of the laboratory should consider the separation of four electricity;
(2) Laboratory precision equipment, sudden power failure will not only lead to detection interruption, but also cause irreversible damage to the equipment. Therefore, it is necessary to provide uninterruptible power supply (UPS) for precision equipment, and double power supply or emergency power generation facilities are needed for medical laboratories and other life-related safety.