Made of medical-grade polypropylene Ultra-thin wall of uniform thickness-accelerate heat transfer Half-skirted plate provides superior rigidity Alphanumeric coding assist in sample organization; convex design around the aperture for leak-proof. DNase, RNase, and endotoxin free Temperature range: stable from -20oC to 100oC Universal fits for the PCR instrument; withstand centrifugation of 6,000 RCF in a fully supported rotor 0.2mL per well