15ml Conical Centrifuge Tubes - 500 Pack, Sterile Plastic Test Tubes for Lab Experiments, Sample Storage & Scientific Research - Perfect for DNA Extraction, Blood Collection & Medical Testing

Made of polypropylene for chemical resistance and greater strength Sterile; RNase, DNase, DNA, Endotoxin - Free The maximum centrifuge speed:12,000g White graduation: 2 ml to 14ml, 0.5ml increment 20x25/bag (500 tubes total) The newer batch has neon green caps