Precision Piston Pump for Microliter-to-Milliliter Liquid Metering and Dispensing
FOREACH offers EA precision, SM miniature and TM ultra-compact piston pumps for aspiration, metering, dispensing and dosing in automated instruments. The EA series covers 50 μL–20 mL; displayed SM configurations cover 50 μL–1 mL and TM configurations cover 50–500 μL. Neither capacity nor nominal volume per step defines the minimum reliable dose.
For clinical chemistry, immunoassay, laboratory automation, sample preparation, life science and water or environmental analysis, selection can focus on a reagent dispensing pump, sampling pump, sample dilution pump, buffer dispensing pump, reaction-liquid dosing pump or standard-addition pump. Suitability requires validation with the actual fluid and instrument process.
EA full-stroke accuracy and repeatability are both ≤0.5% under the specified test conditions. SM full-stroke repeatability is ≤0.5%; accuracy is configuration-specific. TM accuracy, repeatability, pressure and life require testing of the selected configuration and working conditions; other series ratings do not apply.
EA head options include PMMA, PCTG and PEEK; piston options include zirconia ceramic, alumina ceramic, PEEK and sapphire. SM head options include PMMA, PSU, POM and PEEK; piston options include ceramic, stainless steel and PEEK. TM displays a PMMA head and ceramic piston, with other materials assessed per project. Check heads, pistons, seals and valves together; whole-path light protection needs a separate design assessment. Learn more in the piston-pump head material selection guide.
EA and SM support 1/4-28 UNF or M6 fluidic ports; displayed TM configurations use 6-40 UNF. Valves, feedback, drive controls, tubing and mounting are matched to the project. Allow for fittings, tubing bends and service access in the installation envelope.
A precision piston pump can serve as a sampling pump, dispensing pump, metering pump or dosing pump within an instrument. Share the single-dose volume, target cycle time, fluid composition, backpressure and installation dimensions to define capacity, wetted materials and controls.
EA-100-PMMA
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-PEEK
100 μL Precision Piston Pump for Specialty Reagent Dispensing and Small-Volume Reaction Systems, with a PEEK Pump Head for Fluid Paths Requiring Material Compatibility and Light Protection
EA-250-PMMA
250 μL Precision Ceramic Piston Pump for Sample Dilution, Reagent Dispensing and Small-to-Medium-Volume Reaction-Liquid Handling, with a PMMA Pump Head
EA-250-PEEK
250 μL Precision Piston Pump for Specialty Reagent Dispensing and Small-to-Medium-Volume Fluid Paths, with a PEEK Pump Head for Applications Requiring Material Compatibility and Light Protection
EA-500-PMMA
500 μL Precision Ceramic Piston Pump for Routine Reagent Transfer, Sample Dilution and Metered Buffer Dispensing, with a PMMA Pump Head
EA-500-PEEK
500 μL Precision Piston Pump for Specialty Reagent and Medium-Volume Liquid Transfer, with a PEEK Pump Head for Fluid Paths Requiring Material Compatibility and Long-Term Stability
EA-1000-PMMA
1 mL Precision Ceramic Piston Pump for Reagent Transfer, Diluent Addition and Buffer Dispensing, with a PMMA Pump Head
EA-1000-PEEK
1 mL Precision Piston Pump for Specialty Reagent Transfer and Automated Liquid Handling, with a PEEK Pump Head for Light-Sensitive and Material-Compatible Fluid Paths
EA-2500-PMMA
2.5 mL Precision Ceramic Piston Pump for Buffer Transfer, Diluent Addition and Wash-Fluid Supply, with a PMMA Pump Head
EA-2500-PEEK
2.5 mL Precision Piston Pump for Specialty Reagent, Buffer and Wash-Fluid Transfer, with a PEEK Pump Head for Material-Compatible Fluid Paths and Long-Term Operation
EA-5000-PMMA
5 mL Precision Ceramic Piston Pump for Wash-Fluid Supply, Buffer Transfer and Line Priming, with a PMMA Pump Head
EA-5000-PEEK