Comprises a bulb and three pinch valves to control the influx and efflux of pipette contents. Enables efficient one-handed operation by allowing control of air discharge, liquid absorption, and liquid distribution. Helps save time and effort during use. Features: - Material: Rubber - Size: 13.00 x 6.00 x 6.00 cm / 5.11 x 2.36 x 2.36 inches - Strong suction force, resistant to cracking, and minimizes liquid precipitation - Designed for efficient one-handed operation, ideal for controlling air evacuation, liquid uptake, and dispensing - Made from natural rubber, ensuring safety and durability - Suitable for use in mining, agricultural research, food testing, chemistry laboratories, and educational settings - Manufactured using professional technology to ensure product quality and long-term performance