Feature 1Easy Dropping: Comes with a rubber top dropper, this drop bottle enables easy counting of the material for higher accuracy. 2Good Material: Adopting high quality amber glass material, effectively preventing the effects of UV rays for preservation. 330ml Capacity: Designed to have 30ml large capacity, the dropper bottle ensures better chemical storage, safe and reliable. 4Practical Use: Can be applied to the storage of chemical, pharmaceutical and other products in laboratory, classroom, etc. 510Pcs in Pack: There are 10pcs dropping bottle in the set, and the quantity will surely satisfy your various working needs.SpecificationItem Type: Dropper BottleMaterial: Amber GlassApplication: For the storage of chemical laboratory chemicals, pharmaceuticals and other products. Capacity: 30mL .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List10 x Dropper Bottle10 x DropperNote1. The dropper on the bottle is used in conjunction with the dropper bottle.2. Do not rinse the dropper on the bottle with water.3. Do not store strong alkalis for a long time since it's glass stopper, and do not place strong oxidants for a long time.4. The remaining medicines that are took cannot be returned.5. The dropper should not be placed upside down or horizontally, so as to avoid reagent corrosion to the dropper.6. When dripping, the dropper cannot be put into the container, so as not to contaminate the dropper and damage the container.