Sterile, single-use, graduated clear Bottles, made up of non-pyrogenic and non-cytotoxic Polyethylene terephthalate glycol with high-density polyethylene closure. Material conforming to USP Class VI. Leakproof. Free of detectable pyrogens, RNase & DNase, non-cytotoxic. The heat-shrink band around the closure and neck provides a tamper-evident seal. Packed in shrink-wrapped Trays.  Ideal for sampling, storage, and leak-proof shipment of API, bulk intermediates, pH-sensitive liquids, and culture media. Well suited for prolonged storage of pH-sensitive liquids such as buffers. 2000 ml has molded-in handgrips and a 53 mm (53B) white closure.