The Evergreen 300-2913-Y20 Test Tube Stopper Caps are meticulously engineered to provide a dependable sealing solution for non-threaded test tubes in laboratory environments. Featuring a recessed top design, these caps ensure a secure fit that significantly reduces the risk of contamination and evaporation of valuable samples. Crafted from high-quality PE-HD material, these caps are not only robust but also lightweight, facilitating ease of use during various laboratory procedures. The vibrant yellow color enhances visibility, allowing for quick identification and efficient organization in busy lab settings.

These versatile stopper caps are ideal for a wide range of laboratory applications, including sample storage and transportation. Their compatibility with various non-threaded test tubes makes them an indispensable accessory for any laboratory setup. With a cutting diameter of 11 millimeters, they provide a snug and secure fit, ensuring the integrity of your samples is maintained. Rely on Caplugs Inc. for high-quality products manufactured in the USA that meet the rigorous demands of contemporary laboratory practices.