Medium bottles, 500 ml From Nalgene Material: PETG, HDPE screw cap. Sterile Vol. Low permeation of CO 2 and O 2 allows storage of culture media for up to six months. The cap and neck are sealed with a heat-shrink band: Vessel remains sterile as long as the band is intact. Product details €127.85 /Pack Qty. excl. VAT. | 12 unit (s) per Pack Qty.