・ This product is a glass tube containing a large amount of activated charcoal. It is filled with two layers weighing 200 mg and 400 mg of 20-40 mesh activated charcoal (sorbent).
・ It contains a large amount of activated charcoal, so it is particularly suitable for sampling vapors from strongly volatile organic compounds, and is also convenient for long sampling times.
・ The glass tube has been pre-scored to make it easier to cut.