What do these products do in this instrument?
Filters: method-permitted water-sample treatment or component protection
Remove particles only at method-permitted locations, consistent with the defined analyte and downstream metering. Check targets before and after filtration, pressure drop, blanks and the first sample after replacement separately.
Filters provide method-permitted particle retention or component protection. Target components, pore size and filter material guide selection. Assess pressure drop, adsorption and recovery after replacement in the actual path.
Tubing and fittings: in-cabinet wetted and reaction-path connections
Connect incoming water samples, reagent sources and reaction positions, identifying shared sections and waste destinations. Recheck materials, tubing length and maintenance replacements together with actual delivery and the first reaction after restart.
Tubing and fittings together form sealed connections and the actual transfer path. Check formulation, inner/outer diameters, length, tube-end positioning and port geometry, including added volume in residue and arrival delay.
Design tubing and fittings as a complete wetted path
Tubing, fittings and ports jointly determine sealing, transfer volume and medium-contact coverage. Materials and dimensions must suit formulation, operating conditions and installation. Include tubing length and interface volume in priming, shared residue and arrival delay. After connection changes, recheck delivery and cleaning through the actual path.
Check analyte retention while protecting components
Filters provide method-permitted particle retention or component protection. With actual samples and filter materials, check adsorption, blanks, pressure drop and flow changes as loading accumulates, while measuring analyte recovery. The specific method must validate whether the filtrate remains suitable for analysis.
Translate actual branch conditions into configuration requirements
| Condition | To confirm |
|---|---|
| Materials and assembly | Provide formulation, tubing inner/outer diameters, length, fitting structure and port fit. |
| Volume and load | Calculate shared and replacement-component added volumes; measure actual flow and response. |
| Filtration and method requirements | Confirm filter material and pore size. Compare analyte recovery, blanks and pressure drop before and after fouling, and record recovery after replacement. |
| Operation | Specific operating conditions |
|---|---|
| Protective filtration | Analytical target, filter material/pore size, filtration location, added volume, actual pressure drop and permitted maintenance |
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 |
Explore specific operating and validation tasks
Protective filtration
Filtration can reduce particle entry into components while also changing the measured sample. Assess adsorption, retention, pressure drop and recovery after replacement. Method acceptability takes priority over mechanical protection.
Confirm product roles in actual operation
| Operation | Measurements and observations | Priority checks |
|---|---|---|
| Protective filtration | Compare analytes, recovery and blanks before and after filtration. Check pressure drop and actual flow after loading accumulates, and the first sample after replacement. | Blockage, adsorption, leakage or added filter-assembly volume can change the sample and its arrival time. |
Assess dose, reaction, blanks and recovery according to the method, and verify what is measured after filtration.
Does a fitting that tightens prove the tubing assembly is suitable?
Also confirm port geometry, tube-end positioning and seal fit. Check leakage, hold-up and performance after repeated maintenance under actual conditions; thread engagement alone is insufficient.
Validate field representativeness and internal metering separately. Filtration intended to protect components must still meet method requirements.