Specifications: The product has the characteristics of durability, high temperature resistance, and corrosion resistance. It is a container used to hold a small amount of liquid, and most of which is used in the laboratory. Dropper bottles bottom is round and wide, which is stable, delicate and beautiful. Item Name: Dropper Bottle Material: Glass Features: Transparent, Rubber Head, Glass Equipment, Durable Size Chart: 30ml: Diameter of Dropper Bottle Mouth: 28mm/1.10", Product Size: 11.5cm x 3.5cm x 3.5cm/4.53" x 1.38" x 1.38" (Approx.) 60ml: Diameter of Dropper Bottle Mouth: 35mm/1.38", Product Size: 13cm x 4.2cm x 4.2cm/5.12" x 1.65" x 1.65" (Approx.) 125ml: Diameter of Dropper Bottle Mouth: 42mm/1.65", Product Size: 15cm x 5.5cm x 5.5cm/5.91" x 2.17" x 2.17" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. The dropper is used in conjunction with the drop bottle. Do not rinse the dropper with water. Do not store strong alkali (glass stopper) for a long time, and do not store strong oxidizer for a long time. The remaining items sucked up cannot be returned. The dropper should not be placed upside down or horizontally to prevent the reagent from corroding the dropper. When dropping liquid, the dropper should not be put into the container to avoid contamination of the dropper and damage to the container. Package Includes: 1 x Dropper Bottle