The SPI Supplies® brand of PTFE dippers represents a high quality type of labware that is totally inert, as all items are manufactured from pure virgin PTFE. The extendable screw-in shafts have a steel core for rigidity and are completely encapsulated in PTFE. The basic unit consists of a container with a single 600 mm (24") shaft.
Replacement screw in shafts are also available.