All tubes feature frosted writing surfaces on the cap and side for smear resistant labeling. Graduated tubes feature external graduations every 100 L. Molded from clarified virgin polypropylene for unmatched strength and clarity. All tubes are RNase- and DNase-free.An ergonomically designed cap makes these tubes easier to open and close than other tubes.
Tubes feature an improved easy open snap seal that will not pop open during boiling. Flat cap. Target syringe port. Great for boiling. Positive snap seal
