Features [Good effect] The rubber suction bulb has large suction power, is not easy to break, and the liquid is not easy to settle. [High-quality material] The rubber pipette filler is made of rubber, corrosion-resistant, safe and durable. [Easy to use] The suction bulb has 3 valves, which are used by elastic rubber force to help suck the solution into the pipette. [Scope of application] Suitable for industrial and mineral laboratories, agricultural laboratories, food laboratories, chemical laboratories, etc. [Ideal choice] Used in conjunction with a pipette, this is a good laboratory assistant. Specification: Material: Rubber Weight: 47g/1.7oz Color: Red, Green (Optional) Size: 13*6*6cm/5.1*2.4*2.4inch Package List: 1 x Rubber Suction Bulb Note: 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.  Package List