Covidien Plain Specimen Container are tough, durable and inert to most acids, bases and organic solvents. Containers feature a full-turn screw thread that helps prevent leaks. Sterile containers have an integrity seal or O.R. package. Specimen containers meet the NCCLS Specimen Handling Guidelines for primary containers (M29-T2, Vol. 11, No. 14). These versatile containers can be used for almost any liquid or solid specimen as either a storage or transport container and are graduated in U.S. and metric scale.