Connection of the µPACᵀᴹ column to a normal HPLC 6 or 10-port switching/injection valve is achieved with standard 1/16” HPLC fittings. The µPACᵀᴹ column is connected to the HPLC valve with a 25 µm internal diameter (I.D.) × 25 cm PEEKsilᵀᴹ capillary. One end of the capillary has a 1/16” pre-assembled fitting (to valve) that is compatible with most HPLC systems. The other end of the capillary has a 1/32” pre-assembled fitting (to µPACᵀᴹ).