网页2022年5月6日 · Screw Cap Tubes. Abdos offers PCR clean screw cap tubes free from DNase/ RNase, pyrogen, endo-toxins & ATP. Gamma Irradiated, offers free of RNase/DNase, DNA, Pyrogen, Endotoxin, ATP and PCR Inhibitor. 100% virgin polypropylene, resin offers high clarity and ideal for biological & enzyme applications. O