Fangrui Product Details [easy To Operate]: The Long Pipette Pump Offers A Dual Liquid Handling System. Insert The Pipette Into The Cone Tube Nozzle, Slide The Rotating Thumbwheel Down To Aspirate Liquid Effortlessly; Then Choose The Rotation Thumbwheel Or The Dispense Button For Liquid Dispensing. The Operation Can Be Completed With One Hand, Simple And Convenient. [precise Pipetting]: With Precise Operation Roller Design, The Mini Pipette Pump Ensures Accurate Dispensing Every Time. The Cone Tube Connection Guarantees Excellent Sealing, Preventing Any Liquid Leakage. Glass And Plastic Pipettes Are Adaptable. Choose From Multiple Capacities; 2ml, 10ml, And 25ml, To Meet Your Specific Requirements. [easy To Clean]: This Compact And Portable Manual Pipettor Pump Is Specifically Designed For Hassle-free Sample Collection. With Its User-friendly Design, The Pipet Pump Allows For Quick Disassembly, Making It Incredibly Convenient For Cleaning And Maintenance. Ideal For Daily Laboratory Sample Extraction. [ And Enviroment-friendly]: