Locate the source, drive and receiving position for this task
Required inputs are dose per operation, total cycle volume, replenishment/bottle-change interval, backpressure and receiving geometry. Confirm liquid contact, pressure and destination along the diagram before assigning drive and connection responsibilities.
Capacity and replenishment frequency determine the usable cycle
Compare syringe capacity, working stroke, usable doses and refill timing. Confirm channel count, independent drives and shared valve paths separately. Multiple source ports do not establish simultaneous delivery capability.
| Condition to compare | Information required | Selection affected |
|---|---|---|
| Capacity budget | Maximum aspiration, retained volume and total dispensing per cycle | Determine capacity and refill frequency |
| Valve sequence | Source, outlet, hold and power-loss states | Verify aspiration sources and dispensing destinations |
| Channel variation | Syringe, drive and tubing assembly | Validate operating conditions channel by channel |
Compare product options against task requirements
The following candidate options match this page's responsibilities. Compare them against the operating conditions described, then check capacity, materials and interfaces on the product pages. Card images show representative configurations; suitability must still be confirmed at actual operating points and by application results.
| Product category | Corresponding role | Confirm before selection |
|---|---|---|
| HLD rotary-valve syringe pump | Aspiration, holding and dispensing with a rotary valve | Check source/outlet valve positions, capacity budget and replenishment timing |
| HMD solenoid-valve syringe pump | Metered aspiration and dispensing with solenoid valves | Check open/closed and power-off states, working volume and replenishment cycle |
Organize aspiration and dispensing by valve position and receiving location
Organize priming, source selection, aspiration, holding, dispensing and cleaning into a state diagram. Actual liquids and air segments alter compressibility and delivery delay. Confirm valve and receiver positions before liquid motion begins.
Action records should link commands, valve or interface states and actual received results. When raw material, container or sample identity changes, reconfirm shared paths and conditions permitting the next step. Completion of drive movement alone does not replace task acceptance.
Check actual working volumes channel by channel
Measure receipt from every channel at routine volumes, first/last doses and after replenishment, covering low remaining volume and actual media. Capacity and step resolution support screening; usable doses require installed-system validation.
| Validation scenario | Measurement or observation | Interpretation and action |
|---|---|---|
| Working-volume delivery | Compare different doses in actual vessels | Nominal capacity does not establish accuracy at every dose |
| Holding and restart | Include holding, refilling and idle periods | Check leakage, bubbles and the first dose after restart |
Record test medium, configuration, installed path and operating sequence; present routine operating points and boundary results separately. Calculations support design discussions, component documentation checks models, and installed measurements confirm the actual task.
After an abnormality or maintenance, first identify which segment needs recovery
Empty sources, bubbles, nozzle droplets and backpressure changes can affect first or last doses. Stop affected steps, validate recovery after priming and avoid duplicate dispensing.
Retain current source, container identity, completed actions, valve or interface state and actual receiving information. Use the table to locate the stage that changed before deciding to retry, continue or restart. After recovery, recheck the relevant operating point before returning an uncertain action to the automatic cycle.