The best, easy-close graduated sample cups on the market. Gamma irradiation sterilization eliminates potential ETO gas residue contamination. Bio-Tite™ dual-threaded caps create a leakproof seal for utmost confidence, even in harsh transport or pneumatic tube systems. All cups are virgin polypropylene, allowing greater clarity, and will not discolor or become brittle. These cups are stackable, incorporate an easy-grip design, and are available in a variety of sizes for every need. With bilingual tamper-evident seal and label. Available sterile and nonsterile.