Thermo Scientific ART 200 barrier tip 200 ul Perform applications consistently and accurately by using Thermo Scientific ART Barrier Pipet Tips, which seal when exposed to potential contaminants, trapping them inside the barrier. ART barrier tips are designed to aid in pipetting for a variety of applications. These ART Ergonomic pipet tips are designed for Gilson pipetteman Sterile tips are certified free from RNase, DNase, and pyrogen Manufactured according to the industry's highest quality standard Low retention tips are specifically designed for eliminating sample retention within the pipet tip Inner surface is extremely hydrophobic, increasing sample reproducibility and sample accuracy.