Meets the NCCLS Specimen Handling Guidelines for primary containers. Full turn screw thread provides excellent leak-resistant seal. Translucent polypropylene container is tough, durable, non-breakable and inert. Tolerates strong acids, bases and most organic solvents. Sterile containers have a integrity seal or O.R. package. The cups is graduated in both a U.S. and metric scale- Specimen Container, 4 oz, Sterile, Green Cap, Integrity Seal, Individually Wrapped, 100/cs (32 cs/plt)