What do these products do in this instrument?
Sampling probes: container-side sampling and delivery
Form aspiration and delivery interfaces between sample containers and reaction cuvettes, coordinated with pump displacement, liquid level and motion. Evaluate probe-tip position, droplets and sampling with low remaining liquid in the source container together with cleaning.
Custom sampling probes connect source containers to receiving positions. Diameter, tip, surface and interface depend on sample and container. Tip geometry must work with metering drive and motion sequences.
Wash probes: cleaning coverage and residual-liquid removal
Direct wash fluid to contaminated surfaces at probe or cuvette washing stations and aspirate residual liquid where supported. Coordinate supply and aspiration, checking height against actual cuvette geometry and recovery for the next reaction.
Custom wash probes form the container interface for wash-fluid entry or residual-liquid extraction. Confirm supply coverage, aspiration height and drainage timing together with actual container shape.
Match component geometry to actual containers
Sampling and wash probes must fit container openings, bottoms, minimum levels and motion strokes. Record actual contact surfaces and permitted positions before defining tips, interfaces and motion space; appearance alone is insufficient for selection.
Further technical reading
Evaluate interfaces by receiving or cleaning results
At the source, check reachable positions and low remaining volume; at the receiver, check actual volume, droplets or permitted residue. Test wetted-surface maintenance and recovery for the next container during consecutive operation. Reconfirm position and delivery after changing probes, tubing length or containers.
Translate actual branch conditions into configuration requirements
| Condition | To confirm |
|---|---|
| Container and position | Provide opening, bottom, minimum level, positioning error and available motion space. |
| Liquid contact and surfaces | Specify sample or reagent, residue requirements and internal/external probe cleaning. |
| Actual function | Check delivery, coverage, residue, solid-phase retention or mixing results according to the task. |
| Operation | Specific operating conditions |
|---|---|
| Sample aspiration and transfer | Actual sample volume, remaining source volume, probe-tip height, aspiration/dispensing speed and system liquid |
| Metered reagent dispensing | Dose per operation, total cycle volume, replenishment/bottle-change interval, backpressure and receiving geometry |
| Probe/cuvette wash supply and waste removal | Wash-fluid formulation, volume/time, spray/aspiration geometry, air/foam and waste capacity |
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| Custom sampling probe | Sampling interface between source container and fluidic path | Compare custom geometry by minimum liquid level, probe-tip clearance and actual sample |
| Custom wash probe | Washing interface for probe interiors/exteriors or containers | Confirm contaminated surfaces, coverage, aspiration height and peak waste removal |
Related operations and architecture comparisons
Sample aspiration and transfer
Low remaining volume, probe contact with a wall and aspiration/dispensing reversals may alter delivery. First measure error in the target container, then assess residue using a blank after a concentrated sample; one calibration cannot address both issues.
Metered reagent dispensing
For repeated dispensing, record usable doses per fill and replenishment points. Confirm restoration of the liquid column after replenishment before evaluating the first dose. Retrying an interrupted action must also avoid duplicate addition to the same cuvette.
Probe/cuvette wash supply and waste removal
Internal-probe, external-probe and cuvette-bottom residue cannot all be solved by increasing the same supply volume. Check cleaning coverage, aspiration height and waste capacity, then validate recovery with high/low concentration switching and blanks.
Confirm product roles in actual operation
| Operation | Measurements and observations | Priority checks |
|---|---|---|
| Sample aspiration and transfer | Measure actual delivery at the receiver, covering routine small volumes and maximum task volume, first dose after idle, sample changes and high/low concentration sequences | Air aspiration, clots/particles, probe contact with a wall or leakage alter actual delivery |
| Metered reagent dispensing | Use actual media to check first, middle and last doses and delivery after bottle changes; confirm received volume and timing rather than substituting commanded steps for volume | Empty sources, bubbles, nozzle droplets and backpressure changes affect first or last doses |
| Probe/cuvette wash supply and waste removal | Confirm supply and peak waste-removal capacity under installed resistance; measure residual liquid, carryover or assay-specified recovery | Insufficient supply, foam, dry aspiration and a full waste container disrupt the cleaning cycle |
Check delivered volume, first dose after idle and residue after high/low concentration switching at the receiving location.
Can sampling and wash probes be replaced based on similar appearance alone?
Confirm tip, channels, interfaces and operating positions separately, then validate each probe's aspiration/dispensing or cleaning results. Similar appearance does not imply equal wetted volume, coverage or residual-liquid levels.
The assay determines sample suitability; full-scale metering specifications cannot replace small-dose and complete-instrument results.