PP Narrow Mouth Reagent Bottle provided by STE-Mart are made of high quality polypropylene PP with strong resistance to pressure, impact and acid resistance as well as high temperature resistance of 121℃. Due to the high-end molding technology and surface treatment technology, the reagent bottle features smooth inner and outer surfaces to greatly reduce sample loss. The cap with a sealing ring fits snugly against the bevelled inner edge of the bottle neck to offer leak-proof sealing performance which will be not affected by repeated opening and tightening.