Collect and transfer acids, solvents, and other harsh chemicals. The bowl and handle on these dippers are PTFE, so they resist chemicals better than standard plastic dippers. For added durability, the handle has a stainless steel core. The threaded design lets you detach the bowl from the handle for easy cleaning and storage. To make the dipper longer, thread together as many extension handles (sold separately) as you need to reach your desired length.