When choosing an eyewash or shower equipment, in addition to considering the environmental factors on site, at the same time, it must also consider the standards and technical requirements that the eyewash or shower equipment itself should meet, as well as the after-sales service of the equipment and the safety performance of the equipment.

　　 Due to the special requirements of eyewash and shower equipment, there will be some corresponding regulations on the materials of the equipment. At present, in the domestic market, the eyewash heads and shower heads of imported eyewashes and showering equipment generally use ABS materials, and other parts are stainless steel or copper pipe surface dipped ABS materials: domestic eyewashes and showering equipment are generally corrosion-resistant Excellent performance, not suitable for rust, non-toxic stainless steel material, at the same time sturdy and durable. In the cold weather in the north, you can consider installing antifreeze devices, or other requirements: for example, installing lighting equipment.

　　 Two: The installation of eyewash and shower equipment.
1. Installation requirements
　　According to the ANSI-Z358.1-2014 American eyewash standard, the installation of eyewash and shower equipment needs to be carried out in accordance with the relevant instructions.
1.1 The eyewash and shower equipment should be installed near the source of danger. It is best to quickly reach the area of ​​the eyewash and shower equipment within 10 seconds. At the same time, they should be installed on the same level as possible, preferably in a straight line. Arrive, avoid cross-layer ambulance.
　　1.2 There are eye-catching signs around the eyewash and shower equipment. The logo should be clearly expressed in both Chinese and English and graphically. It tells the operators at the production site clearly the location and purpose of the eyewash and shower equipment.
　　1.3 When the eyewash and shower equipment are in normal operation, each component should meet the requirements of the ANSI-Z358-1-2014 standard, and each nozzle can be used independently at the same time. In areas in the north that may freeze in winter, it is necessary to add antifreeze devices or install antifreeze protection facilities next to the equipment.
　　 After the installation of each component of the eyewash and shower equipment is completed, the following requirements should also be met at the same time:
　　A. When the eyewash and shower equipment are correctly connected to the water source and all valve switches are closed, there should be no water leakage in the connected pipeline.
　　B. When the operating switches of the eyewash and shower equipment are fully opened, all valves must be kept open, except for human factors
　　C. When all the switches of the equipment are in full working condition, the whole equipment should meet the requirements of ANSI-Z358.1-2014 standard.
　　2. Requirements for the installation location of eyewash and shower equipment
　　2.1. Eyewash and shower equipment should be installed near the source of danger. It is best to quickly reach the area of ​​the eyewash and shower equipment within 10 seconds. At the same time, they should be installed on the same level as possible. It is best to be able to reach in a straight line to avoid Cross-level ambulance.
　　2.2. Under special circumstances, eyewash and shower equipment should meet special requirements. For example, in environments that may be directly exposed to strong acids or alkalis, or other toxic and harmful substances that have strong corrosive properties or are easily absorbed by the skin, eyewash and shower equipment must be installed in the place closest to the source of danger.
　　2.3. In laboratories that may be exposed to the above-mentioned toxic and harmful chemicals, eyewash and shower equipment are generally installed in the internal passages of the laboratory. But sometimes the working position is far away from the eyewash and shower equipment, which may delay the rescue time. In this case, it is recommended to install eyewash and shower hoses next to the pool in the laboratory. This kind of equipment is more convenient and practical. When the eyes, face and other parts are accidentally splashed with dangerous chemicals, this device can be used to rinse as soon as possible, providing timely protection.
Three: the water outlet speed of the eyewash and shower equipment.
The water outlet speed of the eyewash and shower equipment should be as stable and balanced as possible. The water flow from the nozzle should be soft, showing a water mist state to prevent the water flow from being too large. In this way, the flushing area can be enlarged, and the uncomfortable feeling of the eyes caused by the rapid flow of water can be avoided.
The water flow of the shower is generally determined by the specific emergency equipment. According to the ANSI-Z358-1-2014 standa