This GC 3-series outlet midpoint pressure calculator models three capillary columns connected in series with a pressure supply introduced between column 2 and column 3. It calculates individual column outlet flows, mid-point supply flow, flow ratios, and the intermediate pressure between column 1 and column 2.
GC 3-Series Outlet Calculator Interface
Connection Diagram
What inputs are required ?
- Dimensions and temperature of capillary column 1 and 2
- Column 1 inlet pressure and column 3 outlet pressure
- Mid-point pressure supply (between column 2 and 3)
- Carrier gas
Outputs of GC 3-Series Outlet Midpoint Pressure Calculator
- Outlet flow of column 1, 2 and 3
- Mid-point supply flow
- Flow ratio between column 1 and column 3
- Intermediate pressure (between column 1 and 2)
Before You Go
Want to understand how this calculator works behind the scenes?
The full article with explanation will be published soon at GC Hardware.
Before you go, you may also find these helpful:
- Compare how flow behavior changes without an outlet midpoint supply
- Explore other GC 3-series and splitter/combiner column configurations
- Use these calculators to validate EPC setups, restrictor sizing, and detector flow balance
Browse related calculators below:
If your system uses a different column connection — such as a single column, two-column series, mid-point pressure supply, splitters, or combiners — explore the other GC column flow calculators at Free GC Calculators for configuration-specific flow and pressure calculations.