These sterile serological pipettes are designed for the accurate and rapid dispensing of liquids in a variety of applications, especially cell and tissue culture. Made from high-quality, transparent medical-grade polystyrene, they feature sharp, permanent graduations for precise, error-free reading. Each pipette includes an effective filter plug that prevents aerosol and liquid contamination of the pipetting device, ensuring the integrity of your samples. Key Features & Benefits High Precision & Accuracy: Features sharp, black, highly legible permanent graduations, ensuring accurate dispensing to ±2%. Certified Pure & Sterile: Guaranteed non-pyrogenic, non-cytotoxic, and non-hemolytic. Certified free of DNase, RNase, and human DNA. Filter Plug for Safety: An effective filter barrier prevents overflow and protects both the sample and the pipetting device from cross-contamination. User-Friendly Design: Includes reverse and negative graduations for additional volume and to show volume removed or remaining. The pipettes are designed to fit all common motorized pipette controllers. High Optical Clarity: Made from transparent polystyrene for clear and easy visualization of the liquid and meniscus.