PurePak PCR microtubes 

Reaching into a bulk bag of tubes can cause contamination; PurePak packaging solves this problem by dividing tubes into ten separate PurePaks. PurePaks can be opened as needed to protect unused tubes from contamination. Thin walled tubes are precision-molded with premium, non-wettable polypropylene and receive multi-point, quality inspections to ensure unsurpassed performance. Certified Rnase-, DNase- and pyrogen-free.