Blue Polypropylene Test Tube Caps (16/100mm), 20 Pack

These durable blue polypropylene test tube caps provide a secure and airtight seal for your 16mm diameter tubes. Ideal for various laboratory applications, these caps ensure sample integrity and prevent contamination. Each cap features a ribbed design for a superior seal, easily closing with a simple press. This 20-pack offers exceptional value and convenience for your laboratory needs.