DescriptionThese Drager tubes help you check for benzene gas at work. They come in a pack of 10 and can spot benzene from 0.25 to 10 ppm. You’ll need the Drager Accuro pump to use them.With these tubes, you can test air in tight spots fast. The tubes change colour from light to dark grey when they find benzene.You’ll get your results in just 1-5 minutes. This makes the tubes perfect for quick safety checks. Plus, they’re easy to use and give reliable results.