The Adjustable Pellet holder Adapter is required in order to mount the KBr Pellet Holder (04810949) in your FT-IR spectrometer. With this part number, This adapter is available as a replacement or spare part.
This adapter ships with the KBr Disc Starter Pack (L1272265), the KBr Disc Complete Started Pack (L1272266), and the General Purpose FT-IR Sampling Kit (L1365312).