ALWSCI 100PCS 20ML Clear Glass Sample Vials with Screw Caps for Lab Samples

Leak-Proof: The cap comes with a PE pad, which combined with the threaded spout, better avoid the liquid from leaking or evaporating. , High Quality Glass Made: 20 ml 27. 5*57 mm, Made from clear borosilicate glass, hard and long-lasting, can be used repeatedly, offering exceptional chemical resistance and thermal stability. , Black Polypropylene Caps: All vials come with screw-on black Polypropylene caps & PE liner attached. The cap finish: clear glass 24-400 thread. , Easy to Carry: Perfect for travel, and conveniently fits in your purse. With screw cap, Good sealing, avoid leaking. , Specifically Designed for Laboratory Applications: These vials are a suitable choice for chemical and pharmaceutical labs. They are ideal for storing and aliquoting reference standards, chemical reagents, pharmaceutical intermediates, biological samples, and buffers.