Locate the source, drive and receiving position for this task
Air displacement drives liquid within the tip, while motion brings the tip to the target location. The illustration shows the task sequence.
Define disposable-tip or fixed-probe architecture, sealing, working volume, liquid class, immersion position and dispensing action. Follow the diagram to confirm liquid contact, pressure and destination before assigning drive and connection roles.
Set immersion, speed and air gaps together
Set immersion, speed and air gaps using working volume, minimum source volume and tip geometry. When retaining a suspension or product, avoid using a single water-based program that overlooks sample properties.
| Condition to compare | Information required | Selection affected |
|---|---|---|
| Aspiration position | Immersion depth, minimum liquid level and bottom clearance | Prevent air aspiration or inlet occlusion |
| Motion conditions | Dwell, withdrawal and motion between vessels | Check retained droplets and dripping |
| Contamination-control strategy | Tip-change requirements and destination contact method | Define sample identification and cross-contamination controls |
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 |
|---|---|---|
| SMTP air-displacement pipetting pump | Air displacement with disposable tips | Validate tip sealing, liquid type and motion together |
Record tip pickup, sample identity and hanging droplets
Preserve source and target identities from tip pickup through disposal. Set post-aspiration waiting and dispensing position for the liquid class. If leakage, hanging droplets or air aspiration occurs, flag the current operation for review before proceeding.
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.
Evaluate delivery and contamination using actual vessels
Measure actual received volume and run sample sequences with blanks to check cross-contamination. Recheck operating points after changing tip brand, motion or liquid formulation.
| Validation scenario | Measurement or observation | Interpretation and action |
|---|---|---|
| Vessel changes | Compare deep and shallow vessels and low-volume delivery | Check immersion and sealing before adjusting liquid-handling settings |
| Sample changeover | Assess blanks under the actual tip-change program | Validate pipetted volume and external-surface contamination separately |
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
Seal leaks, aspiration of air, hanging droplets or incorrect immersion can alter delivery. Check actual results from the affected step before resuming the next action.
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.