Elevate your lab work with the Labcon VWR Screw-Cap Microcentrifuge Tubes. This pack of 500 features durable tubes equipped with secure purple standard caps, ensuring a tight seal for your samples. Each tube comes with assorted color-coded inserts, making it easy to organize and identify your specimens at a glance. Designed for versatility, these microcentrifuge tubes are perfect for a variety of applications, from DNA extraction to sample storage. Trust in Labcon's quality for reliable results every time. Perfect for busy labs needing efficiency and organization!