Thermo Scientific Samco 3mL Graduated, Large Bulb non-sterile Samco Accurately measure more than one volume by using Thermo Scientific Samco Graduated Transfer Pipettes. Single-unit design features a built-in pipette bulb that eliminates the need for plugging, packaging, autoclaving while preventing cross-contamination. Made of shatterproof, nontoxic polyethylene Low-affinity surface reduces the loss of cells and valuable proteins due to binding Can be frozen in liquid nitrogen, or heat sealed for storage