The F-type glass gas inlet tube feeds gas both below and above the liquid surface in cells with ground-glass necks. Gas is bubbled through the solution before the measurement to remove oxygen, and only fed over the surface during the measurement. Available in 14# and 19# joint sizes.
| Product | F-type gas inlet tube |
| Material | Borosilicate glass |
| Connection | Ground joint: 14# / 19# |
| Joint Size options | 14#, 19# |