These tubes are chemically clean and well-suited for general use in chemistry, blood banks, hematology, and other laboratory procedures.

• Made of borosilicate glass 7.0
• Fire-polished top
• Well-rounded bottoms
• Shrink-film sealed to prevent contamination

Each tube is annealed at temperatures over 426.7 °C (800 °F) to increase strength and reduce breakage.

Tubes are packed in lint-free packaging and are shrink-film sealed to prevent any contamination from outside sources.

Tubes feature smooth, well-rounded bottoms with no irregularities. Tops are fire-polished to eliminate rough edges.