Made of chemically inert borosilicate glass, Azer Scientific’s Culture Tubes offer fire-polished rims, and each bottom is well-rounded. The tubes are sent using ShipSafe packaging, particle-free shrink-wrapped boxes with specially engineered corrugated sectioning to help prevent breakage during transport and storage. Packaging boxes are compact and designed to fit into most dispensers. The tubes meet the ASTM E982-94 standard, and two sizes are available for common immunohematology procedures (10 x 75 mm and 12 x 75 mm).