Description This laboratory sampling tube plug excels in air quality monitoring and environmental analysis, providing effective sampling tube closure for activated carbon sampling. Its compact design perfectly fits gas analysis tube stoppers, ideal for scientific research and air sample collection applications. Features -Color:White -Material:PTFE -Size:1.40X1.20X1.20cm/0.55X0.47X0.47in -High Adsorption Efficiency: The activated carbon sampling accessory ensures high efficiency adsorption, making it perfect for accurately capturing laboratory sampling tube plug applications for total volatile organic compound analysis -Versatile Compatibility: This air pollution tube end cap is compatible with various adsorption tube stopper designs, providing flexibility for a wide range of sampling and environmental testing scenarios -Avoiding Secondary Contamination: The air quality control stopper is engineered to avoid affecting sample, allowing reliable and pure air quality monitoring results in laboratory and field conditions -Portable and Easy to Use: With a compact design, this air analysis tube stopper fits seamlessly onto air sample collection systems, making it perfect for quick deployment in diverse monitoring locations -Firm Material: Crafted from robust materials, the sampling tube cap is both reusable and resilient, ensuring longer service life for your gas sampling accessories cap requirements Package list: 4 x Sampling Tube Plugs