FOREACH 5 mL Precision Piston Pump for Specialty Wash Fluids, Buffers and Medium-to-Large-Volume Supply, with a PEEK Pump Head for Fluid Paths Requiring Material Compatibility and Stability
EA-5000-PEEK is a 5 mL precision piston pump with a PEEK pump head for buffer transfer in laboratory automation, metered wash-liquid addition in analyzers and priming of sample-preparation fluid paths. It supports 1/4-28 UNF or M6 ports and 2000 full-stroke steps. Accuracy and repeatability at 100% full stroke are both ≤0.5% under the specified test conditions.
The displayed PEEK pump head can be replaced by a project-matched PMMA or PCTG option. Piston choices include zirconia ceramic, alumina ceramic, PEEK and sapphire. Ports, motor, optical feedback, valves and controls can be configured to the instrument. All wetted materials must be assessed against reagent composition and operating conditions.
Typical Applications:
Automated sampling and solution preparation, Metered washing and priming, Reagent metering and standard addition, Metered reagent filling
| Volume | 5000 μL |
|---|---|
| Displayed pump head material | Polyether ether ketone (PEEK) |
| Pump head material options | PCTG / PMMA / PPS / PEEK / PVDF / POM / PSU / PC; Other engineering materials can be assessed for the project. |
| Piston material options | Zirconia ceramic / alumina ceramic / polyether ether ketone (PEEK) / sapphire; the combination is assessed for fluid properties, service-life requirements, installation space and project needs. |
| Fluidic interface | 1/4-28 UNF / M6 |
| Stroke | 12.7 mm |
| Recommended max speed | 600 RPM |
| Motor step angle | 1.8° / 0.9° |
| Lead | 1.27 mm |
| Full-stroke steps | 2000 Step |
| Accuracy at 100% stroke | ≤0.5% |
| Repeatability at 100% stroke | ≤0.5% |
| Accuracy at 2% stroke | ≤2.0% |
| Repeatability at 2% stroke | ≤1.5% |
| Backlash | ≤1.0% |
| Designed life | 5 million cycles |
| Max fluid pressure | <0.30 MPa |
Typical applications of the 5 mL PEEK-head precision piston pump
EA supports metered liquid handling in clinical chemistry, immunoassay, laboratory automation, sample preparation and water or environmental analysis. Project configurations can also be assessed for life science and omics instruments, diagnostic reagent filling and industrial liquid dosing. Tasks include reagent addition, dilution, standard addition, buffer dispensing, reaction-liquid addition, solution preparation, metered washing and priming. Depending on its role, it may be described as a reagent, dilution, standard-addition, dispensing or reagent-filling pump. Titrant addition requires additional minimum-dose validation.
EA-5000-PEEK focuses on buffer transfer in laboratory automation, metered wash-liquid addition in analyzers and priming of sample-preparation fluid paths. The 5 mL capacity supports larger metered doses, solution preparation and priming sequences. Delivery speed depends on the drive and complete fluid path. The displayed PEEK head is a material option for specialty reagents. It does not establish compatibility of all wetted parts or light protection for the entire fluid path. The scenarios below connect instrument requirements with configurable capabilities; suitability is subject to application validation.
1. Metered dispensing pumps for automated sampling and solution preparation
Automated sampling and solution-preparation equipment delivers reagents, diluents or buffers to selected containers. The dispensing pump must match the dose volume, sequence timing, valves and instrument controls.
EA-5000-PEEK: EA supports motor, optical feedback and valve configuration. The specification lists an optional ISC1000 integrated driver with RS-232, RS-485 and CAN interfaces; these are driver capabilities, not interfaces built into the bare pump. Positioning and cycle time depend on the instrument motion system and fluid path.
2. Metered wash-liquid and priming pumps for analytical instruments
Startup, fluid changes and maintenance can require defined wash-liquid volumes, liquid replacement and priming. A wash-liquid dosing or priming pump must coordinate delivery with valves and an air-clearing procedure.
EA-5000-PEEK: Capacity can be selected for the required wash volume, with matched valves, tubing and controls. A larger capacity can reduce refills but does not guarantee faster rinsing. Priming, air clearance and wash carryover require complete-system validation.
3. Reagent metering and standard-addition pumps for water analyzers
Water and environmental analyzers meter reagents, standards or diluents. A reagent metering or standard-addition pump must control dose volume while matching reagent composition, concentration and cleaning conditions.
EA-5000-PEEK: Pump-head, piston and valve materials can be matched to the fluid. The EA specification includes an optional seal-wash arrangement for maintenance planning with crystallization-prone liquids. This option does not establish universal reagent compatibility or replace fluid and cycling tests. The displayed PEEK head is a material option for specialty reagents. It does not establish compatibility of all wetted parts or light protection for the entire fluid path.
4. Small-volume reagent filling in diagnostic reagent production
Diagnostic reagent filling requires defined doses with consistent fill volumes, suitable timing and controlled dripping after dispensing stops. Reagent filling pumps must be designed together with valves and filling nozzles.
EA-5000-PEEK: This capacity provides a starting point for matching the individual fill volume, with project-specific materials, valves and controls. This is an application-development direction: fill accuracy, speed, dripping and cleanliness require tests with the reagent and filling system.
Application selection guidance
5 mL is the nominal capacity; nominal volume per step is approximately 2.5 μL. Neither is a validated minimum dose. Provide working volume, allowed error, timing, reagent, temperature and back pressure for configuration-specific testing. The specification footnotes describe the 2% stroke figures as displacement tests, not direct measurements of reagent dispensing.
The specified expected life of five million cycles uses pure water at room temperature and 50 kPa back pressure. Saline or crystallization-prone fluids require a maintenance procedure. Pressure, seal wash, feedback and driver options follow the formal specification and project configuration. Omics, titration and filling require further carryover, minimum-dose, dripping or process validation.
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Frequently Asked Questions
This configuration targets buffer transfer in laboratory automation, metered wash-liquid addition in analyzers and priming of sample-preparation fluid paths. The 5 mL capacity supports larger metered doses, solution preparation and priming sequences. Delivery speed depends on the drive and complete fluid path. Suitability depends on the fluid, working volume and instrument timing.
Piston Pump Configured for Your Instrument
Share the target volume, fluid compatibility, port type, control method, installation space, and service-life requirements. The FOREACH engineering team can help confirm the pump configuration and wetted materials.