Transferpette S -8/-12 pipettes need not to be disassembled before autoclaving. The pipettes are completely autoclavable at 121°C (2 bar), acc. DIN EN 285. But the volume adjustment must be set to an available numbered volume (e.g., 11.25 or 11.26 but not between), with the volume-change protection set fully unlocked. We recommend the use of sterilization bags.
Further information on the procedure can be found in the manual in chapter "Disassembling the manifold".