· DNase, RNase and Pyrogen-Free · Matched pestles & tubes · Individually Wrapped · Autoclavable Pestles have a specially designed fit with micro tubes to optimize efficiency of pellet resuspension. Pestle shafts are strong enough for use with a motorized mixer but can also be operated manually for more shear-sensitive samples. Micro tubes are available in 0.5mL and 1.5mL sizes and feature a positive seal, 搒nap cap? design to allow for multiple opening and closing cycles. Tubes have molded graduations and frosted, sidewall marking spots as well as flat, frosted caps for additional labeling. Caps are also pierceable via syringe needle. Micro tubes and pestles are individually bagged and then over-bagged in quantities of 100 each. Lot control numbers with material traceability on outer carton are included.