FEP bottle washing has extraordinary chemical resistance, ultra-high temperature adaptability, and high cleanliness, no adsorption, no shedding and other characteristics. 1. High and low temperature resistance: the operating temperature can reach 2. The bottle body and tubes are made of high-purity FEP materials, which are pollution-free, safe and reliable. The tubes and tubes are sealed reliably. The spraying performance is sensitive, the recovery is fast, and the residue does not flow. It can be sprayed into the dead corner of each container, and the cleaning is convenient; 3. Transparent and colorless appearance, with the lowest refractive index among all plastics; 4. Extremely low dissolution and precipitation, it is an excellent vessel for storing reference materials, highly corrosive, expensive and high-purity reagents; 5. Extraordinary chemical resistance, can withstand almost all chemical solvents (aqua regia, hydrofluoric acid, etc.); 6. It can replace the volumetric flask to prepare standard solution, which can be controlled to drop by drop state to add sample and water, and there is no residue in the return nozzle