A - The black tubing has a very good conducting capacity. It is typically used in antistatic applications. This tubing is made of an Antistatic Compound which only contains pure PTFE and very fine coal parts. The excellent chemical resistance of PTFE remains almost the same. (Exception: substances with a high reactivity to coal). The load resistance is at least 10 MOhm/m.
B - The Zebra Tubing with black PFA conducting stripes on surface is made of high-purity PFA. Thanks to the shielding effect of the conducting PFA this tubing is ideal to prevent fires that could occur due to sparking between an atmosphere of transported flammable gases and the exterior surface of the tube.