This GC combiner midpoint pressure calculator models a three-column GC configuration where two inlet columns combine at a pressure-controlled midpoint before feeding a single outlet column.
It calculates outlet flows for all columns, midpoint supply flow, and flow ratios.
GC Combiner Midpoint Pressure Calculator Interface
Connection Diagram
What inputs are required ?
- Dimensions and temperature of capillary column 1, 2 and 3
- Column 1 and 2 inlet pressure
- Column 3 outlet pressure
- Combiner midpoint pressure
- Carrier gas
Output of GC Combiner Midpoint Pressure Calculator
- Outlet flow of column 1, 2 and 3
- Combiner junction pressure
- Mid-point supply flow
- Flow ratios
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 want to explore how the calculator influences:
- Flow balance between parallel inlet columns
- EPC tuning for pressure-controlled junctions
- Detector stability and column loading
You can also compare this calculator with GC splitter and series-column configurations to better understand flow behavior across different GC plumbing layouts.
Browse related calculators below:
- GC Column Splitter Flow Calculator (3 Capillary Columns)
- GC Splitter Midpoint Pressure Calculator (3 Columns)
- GC Column Combiner Flow Calculator (3 Columns)
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.