Where filtration occurs in the instrument
Distinguish method-required filtration from component-protection filtration. Select for analyte, pore size, material, volume and pressure drop, then validate adsorption loss, blanks and recovery after replacement.
Sample-processing filters and pump/valve protection filters may require different locations. Identify the analyte before choosing pore size and material. Measure blanks, recovery and the first sample after replacement.
Product responsibilities in this operation
Tubing, fittings and the protection components described here form the actual path. Validate materials, passage dimensions, connection volume and maintenance state with this operation.
For analytical sample preparation, define the analytical target, filter material and pore size, filtration location, added volume, actual pressure drop and permitted maintenance.
Organize the sequence by actual architecture
- Specify whether filtration is method-required sample treatment or independent component protection. Define the target, constituents permitted to be removed and receiving-sample requirements.
- Compare filter material, pore size, retained volume and connections for the actual solvent, sample volume and analyte. Measure the new filter's actual pressure drop and liquid passage.
- Pass real samples through the complete assembled path and compare analyte recovery, filter blanks and composition changes. Record particle removal and analytical results separately.
- Schedule replacement using resistance trends and method requirements. After maintenance, check sealing, priming and the first sample. A filter alone does not provide backflow prevention or path isolation.
Define operating conditions for this task
| To define | Details |
|---|---|
| Actual operating conditions | Analytical target, filter material/pore size, filtration location, added volume, actual pressure drop and permitted maintenance |
| Acceptance target | Compare analytes, recovery and blanks before and after filtration. Check pressure drop and actual flow after loading accumulates, and the first sample after replacement. |
| Fault localization | Blockage, adsorption, leakage or added filter-assembly volume can change the sample and its arrival time. |
Compare product configurations by the roles on this page
| Product | Configuration option | Conditions to verify |
|---|---|---|
| PE-Series Filters | Particle retention permitted by the method | Cards show representative configurations. Select actual pore size and filter material for the target, pressure drop and recovery requirements. |
| Tubing materials and dimensions | Connection paths and shared volume | Bore, length, load and actual formulation jointly determine materials and dimensions |
| Rigid-tubing fittings | Tube-end positioning and sealed connections | Check tube outer diameter, threads, seal structure and port-bottom geometry |
Validate operation results at the receiver
Compare analytes, recovery and blanks before and after filtration. Check pressure drop and actual flow after loading accumulates, and the first sample after replacement.
Evaluate ratio, mixing, blanks and target recovery at the receiving position.
Locate abnormalities and restore the next operation
Clogging, adsorption, leakage or added filter-assembly volume can change the sample and arrival time.
Confirm the filtration path and sealing, then recheck actual flow, sample renewal and method results before resuming.
Filtration and extraction can change sample composition. Mechanical protection does not replace method-recovery validation.