Where reagent, nucleic-acid eluate and waste-path isolation occurs in the instrument
Arrange paths and consumables according to reagent preparation, sample processing and pre-/post-amplification contamination-control requirements, keeping post-amplification areas isolated from pre-amplification operations. Define flushing and cleaning validation for shared segments, and manage nucleic-acid eluate reception separately from paths for samples with higher contamination levels.
Cleaning fluid and waste must not enter nucleic-acid eluate paths through valve states or backflow. Include maintenance bypasses and power-off states in diagrams and check shared residue.
Product responsibilities in this operation
Valves control the current source or destination; the associated drive performs metering or transfer. Port connections, actual positioning and shared-segment renewal must match the operation.
For this operation, confirm: Reagent, eluate, cleaning and waste connections; sample and receiver identity; pre-/post-amplification boundaries; shared volume; maintenance and power-off states.
Organize the sequence by actual architecture
- Create a state table for fixed-path reagent sources, nucleic-acid eluate receivers, maintenance and waste, confirming contact boundaries between contamination zones.
- Switch sources and outlets for the current extraction or setup step, checking actual valve position, shared residue and target-liquid arrival.
- Before eluate reception or downstream setup, confirm that cleaning-fluid and waste paths are isolated as designed. During recovery, first verify sample identity, destination and volume already transferred.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Reagent, eluate, cleaning and waste connections; sample and receiver identity; pre-/post-amplification boundaries; shared volume; maintenance and power-off states |
| Acceptance target | Verify the intended connections during extraction, eluate reception, cleaning, maintenance and power-off states. Check leakage, backflow and shared-segment renewal without connecting waste or cleaning liquid to an eluate receiver. |
| Fault localization | Wrong connections, backflow or retained liquid can mix sample identities or introduce wash fluid and waste into an eluate path. A mechanically completed switch does not resolve the contamination status of affected material. |
Further technical reading
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| MRV3 multiport rotary valve | Multiple-source selection | Compare 10-, 16- and 24-port options and port diagrams; verify high-pressure suitability separately |
Validate operation results at the receiver
Verify the intended connections during extraction, eluate reception, cleaning, maintenance and power-off states. Check leakage, backflow and shared-segment renewal without connecting waste or cleaning liquid to an eluate receiver.
Confirm eluate identity and received volume, then assess negative blanks and downstream usability under the actual method. Keep these results separate from valve-position and pressure records.
Locate abnormalities and restore the next operation
Wrong connections, backflow or retained liquid can mix sample identities or introduce wash fluid and waste into an eluate path. A mechanically completed switch does not resolve the contamination status of affected material.
Isolate the affected routes and establish source, destination and volume already transferred. Review exposed samples and contamination boundaries before cleaning or replacing affected parts; verify renewal and method-required blanks before restarting.
Neither valve closure nor low internal volume proves isolation of nucleic-acid eluate or pre-amplification work. The complete path and handling procedure require validation.