FOREACH 100 μL Precision Ceramic Piston Pump for Microliter Liquid Dispensing, Reaction-Liquid Addition and Small-Volume Sample Handling, with a PMMA Pump Head
EA-100-PMMA is a 100 μL precision ceramic piston pump with a PMMA pump head for microliter reagent addition in clinical chemistry and immunoassay analyzers, small-volume sample handling and reaction-liquid addition in life science instruments. 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.
Pump heads can be selected from PMMA, PCTG, PEEK and other project-assessed materials. Piston options include zirconia ceramic, alumina ceramic, PEEK and sapphire. Ports, motor, optical feedback, valves and controller can be configured for fluid compatibility, mounting space and system integration.
Typical Applications:
Reagent dosing, Sample dilution, Buffer and reaction-liquid addition, Reagent metering and standard addition
| Volume | 100 μL |
|---|---|
| Displayed pump head material | Poly(methyl methacrylate) (PMMA) |
| Pump head material options | PCTG / PMMA / PEEK; Other engineering materials can be assessed for fluid compatibility, structural strength, manufacturing process and project volume. |
| 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 100 μL PMMA-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-100-PMMA focuses on microliter reagent addition in clinical chemistry and immunoassay analyzers, small-volume sample handling and reaction-liquid addition in life science instruments. The 100 μL capacity and smaller nominal volume per step support the design of small-volume aspiration and staged dispensing sequences. The displayed configuration uses a PMMA head; compatibility must be checked for the head, piston, seals and valves with the actual fluid. The scenarios below connect instrument requirements with configurable capabilities; suitability is subject to application validation.
1. Reagent dispensing pumps for clinical chemistry and immunoassay analyzers
Clinical chemistry and immunoassay analyzers add defined reagent volumes to reaction units. A reagent dispensing pump must support consistent repeated doses and coordinated operation with selector valves, dispensing probes and instrument controls.
EA-100-PMMA: Specified full-stroke accuracy and repeatability are both ≤0.5% under the stated test conditions. Motor, home-position optical sensor and valve options support integration; small-dose performance must be verified using the actual reagent and working volume.
2. Sample dilution pumps for automated sample preparation
Sample-preparation instruments control sample and diluent volumes separately to achieve a programmed dilution ratio. A sample dilution or diluent dosing pump must coordinate repeated aspiration, dispensing, valve switching and between-sample washing.
EA-100-PMMA: 1/4-28 UNF or M6 ports connect to the instrument fluid path, with valves and a controller coordinating aspiration and dispensing. Pump full-stroke specifications are not a guarantee of dilution-ratio accuracy; working volumes, backlash compensation, residual liquid and mixing must also be assessed.
3. Buffer dispensing pumps for life science and omics instruments
Sample preparation in life science and omics instruments can require staged buffer, reagent and reaction-liquid addition. Buffer dispensing and reagent pumps must follow programmed doses while coordinating fluid switching and cleaning.
EA-100-PMMA: Wetted-material, valve and control options support the design of a metered addition unit. Omics applications need additional residual-volume, adsorption and carryover validation; cell- or particle-containing samples require separate assessment.
4. 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-100-PMMA: 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 configuration uses a PMMA head; compatibility must be checked for the head, piston, seals and valves with the actual fluid.
Application selection guidance
100 μL is the nominal capacity; nominal volume per step is approximately 0.05 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.
Datasheet not yet available
The datasheet for this product has not been uploaded yet.
Frequently Asked Questions
This configuration targets microliter reagent addition in clinical chemistry and immunoassay analyzers, small-volume sample handling and reaction-liquid addition in life science instruments. The 100 μL capacity and smaller nominal volume per step support the design of small-volume aspiration and staged dispensing sequences. 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.