Parkway's plastic jars have unlimited uses in labs all across the country, and are more than suitable for sterile urine samples, DNA testing, and various medicines. If you work in a lab setting, you know how important proper storage and cataloging is. With jars from Parkway, you can store and access the proper samples and medicines whenever you need to. With a case of empty jars from us, you can keep your lab on schedule and complete the work that you need to get done.