Where standards and dilution occur in the instrument
Provide separate paths as needed for standards, over-range dilution, internal standards and continuous auxiliary reagents. Verify concentration and mixing from actual delivered sample and reagent volumes. The method determines whether continuous supply is required.
Measure delivery of stock, diluent and internal standard separately, then validate the resulting concentration or method response after mixing. Shared-section residue can produce an incorrect composition despite correct commanded volumes.
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 spectroscopy and elemental analysis, confirm actual sample, diluent or internal-standard volumes, concentrations at each stage, mixing and secondary-sampling conditions.
Organize the sequence by actual architecture
- List stock, diluent and internal-standard sources, target concentrations and working volumes according to the method. Specify receiving locations and mixing methods.
- Deliver each liquid through the source-selection and syringe aspiration/dispense sequence. Record actual receipt and the effect of shared-path flushing on composition.
- After mixing, check actual ratio, concentration or method response, including low-range preparation, overrange dilution and the first liquid after source changes.
- Confirm washing and blank recovery for the actual matrix. If the method requires continuous internal-standard or auxiliary-liquid addition, configure that branch separately for continuous flow and merging conditions.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Actual volumes of original sample, diluent or internal standard; concentrations at each stage; mixing and resampling conditions |
| Acceptance target | Measure each branch's delivery, received ratio and mixing uniformity separately, then check assay response |
| Fault localization | Small-volume errors, shared residual liquid or inadequate mixing may alter the actual ratio |
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 each branch's delivery, received ratio and mixing uniformity separately, then check assay response.
Check concentration ratios, mixing, blank recovery and method results. Evaluate preparation and sample supply separately.
Locate abnormalities and restore the next operation
Small-volume errors, shared residue or insufficient mixing may change the actual ratio.
Review actual results of affected steps before resuming the next action.
A sample-preparation pump is not automatically suitable for nebulizer supply. Confirm the introduction system for the specific instrument.