Where sample collection fits in the instrument
Define the measured sample components, sampling port, interval and destination. Assess stagnant sections, discard volume, return/recovery options and disturbance to culture volume. Check representativeness using paired samples.
Record sampling interval, retained volume and discard destination. Compare target results with reference samples before setting renewal time.
Product responsibilities in this operation
Syringe drive and valve positions jointly organize aspiration, holding and dispensing. Record working volume, remaining inventory and replenishment timing according to the sequence.
For this online sampling task, confirm the analytical target, sampling interval, stagnant-section renewal, discard budget and permitted pretreatment.
Organize the sequence by actual architecture
- Establish whether the measurement concerns cells/biomass or liquid-phase analytes. Confirm sampling port, interval, receiving destination and permissible volume disturbance.
- Plan sample renewal around actual hold-up sections. Record analytical sample, discard and any procedure-permitted returned volume separately.
- Check refresh time at the actual receiver, using paired samples to assess representativeness and analyte retention.
- Record contamination-control boundaries, sample identity and process volume. After maintenance or interruption, confirm the current state before resuming sampling.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Analyte, sampling interval, renewal of stagnant sections, discard-volume budget and permitted pretreatment |
| Acceptance target | Measure renewal time at the analytical or receiving interface and assess target representativeness using paired samples |
| Fault localization | Old-sample mixing, settling, adsorption or insufficient renewal time can make the sample unrepresentative of its source. |
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| 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 |
Validate operation results at the receiver
Measure renewal time at the analytical or receiving interface and assess target representativeness using paired samples.
Compare process and collected samples, checking target retention, contamination and reactor-volume changes.
Locate abnormalities and restore the next operation
Old-sample mixing, settling, adsorption or insufficient refresh time may make the received sample differ from its source.
Review actual results of affected steps before resuming the next action.
Removing cell aggregates may change the measured target. Reduced valve-body contact through a pinch valve does not make the entire path sterile.