MBP 1.5 mL Microtubes by Molecular Biology Products are boil-proof polypropylene tubes rated to 16,700 × g, with 0.1 mL graduations and a SnapLock cap that resists popping open during heating. Choose clear, amber or one of several colors, a Spectrum Pack, sterile bagged tubes or Maxymum Recovery tubes for low sample loss. All are certified RNase-free, DNase-free and nonpyrogenic.