PFA Transparent volumetric flask PFA volumetric flask is used for constant volume, determination of a certain volume, and preparation of a certain concentration of solution. Product characteristics: 1. High and low temperature resistance: the operating temperature can reach - 200~+260 â??; 2. Volumetric flask, also known as measuring flask, is a precision measuring instrument used to prepare a certain volume of solution with a certain concentration of a certain substance. Volumetric flask is a measuring instrument; 3. Extremely low dissolution and precipitation, it is an excellent vessel for storing reference materials, highly corrosive, expensive and high-purity reagents; 4. Extraordinary chemical resistance, can withstand almost all chemical solvents (aqua regia, hydrofluoric acid, etc.); 5. Widely used in electronic chemicals, semiconductor analysis and testing industry; 6. The appearance is transparent and colorless, with the lowest refractive index among all plastics.