These solvents caused softening of the lattice walls and eventual collapse of the interior structure. The carbon-fiber reinforced ABS plug (ABS(CF)-SO3H) provided greater resistance to solvent -as both ethanol and methanol could flow through the printed cartridge with little effect on the structural integrity of the plug. Acetone could also be flowed through the ABS(CF)-SO3H plug, however the interior lattice slowly became deformed by this solvent. Without prior treatment of the ABS or ABS(CF) plugs with H2SO4-SO3, the plugs were immediately degraded by the organic solvents. The printed cartridge was fabricated with a screw fitting at each endsuitable for connecting to liquid chromatography fittings.