Features:Made of natural rubber, corrosion resistant, safe and durable to use.Suction ball has three valves which are used by elastic rubber force to help suck the solution into the pipette.Large suction force, not easy to crack, and the liquid is not easy to precipitate.Use with pipette, a good laboratory assistant.Suitable for industrial and mineral laboratories, agricultural laboratories, food laboratories, chemical laboratories and so on.Specification:Material: RubberColor: Red, Green (Optional)Size: 13*6*6cm/5.1*2.4*2.4inchPackage List:1 x Rubber Suction BulbNote:1. This product is only one-time use. 2. Products should avoid rain and snow leaching, should be kept clean, prohibit the contact with acid, alkali, oil, organic solvent and other substances, and distance from the heat source 1.5 meters away. 3. This product should be stored in a dry and ventilated warehouse, the temperature is 0-35 , relative humidity is not greater than 80%, and the ground 0.2 cm above. 4. The term of validity of this product shall be five years according to the above conditions.Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it