Place the component in the complete analytical fluid path
Liquid sourceRotary inlet phasePiston displacementRotary outlet phaseNozzle, line or mixing point
Draw the liquid path for prime, normal operation, wash, idle and recovery. Mark which liquid contacts each part and where volume, concentration, pressure or detector response will be accepted.
Select by operating duty rather than a family name
| Configuration | Best starting duty | Boundary to confirm |
|---|---|---|
| RPL-P4 | 12–80 μL/rev published displacement range | Smaller repeated doses; verify complete-cycle delivery |
| RPL-P6.35 | 50–300 μL/rev published displacement range | Reagent dosing, titration support or low-flow supply |
| RPL-P15 | 300–1200 μL/rev published displacement range | Larger doses and supply duties |
| DRPL paired heads | Two metered streams | Ratio depends on both heads and the mixed result |
Continue with the application task that matches the liquid movement
Each task guide uses a concrete liquid path, calculation, abnormal-condition table and receiving-position acceptance plan. Choose by what the instrument must accomplish, not by a broad market label.
Provide the inputs that change the configuration
| Input | Provide | Why it changes the design |
|---|---|---|
| Dose or flow | Per-event volume, events per minute or target mL/min | Selects displacement and motor-speed region |
| Liquid and load | Composition, viscosity, crystallization, inlet head and backpressure | Changes priming, slip, materials and cleaning |
| Receiver | Tip, free jet, submerged outlet, mixer or flow cell | Determines whether pump output becomes useful delivered liquid |
FOREACH can use these inputs to match the product configuration, wetted materials, interfaces and control arrangement. The instrument developer remains responsible for method limits, safety logic and qualification of the complete analyzer.
Verify the result after priming, idle time and a realistic fault
- Record the installed configuration and actual liquid, not only the component model.
- Measure steady operation and the first cycle after priming, planned idle and liquid replacement.
- Challenge the relevant abnormal condition: air entry, restriction, low level, blocked outlet or incomplete wash.
- Accept the result at the receiving vessel, detector or cleaned surface; retain the component-level signal for diagnosis.