Sub-1: Ultra-Low Volume Sub-Microliter Dispensing Pump

Sub-1: Ultra-Low Volume Sub-Microliter Dispensing Pump


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The Sub-1 offers precision ultra-low volume sub-microliter dispensing. A precision stepper motor drives the pump, and piston stroke displacement is adjusted using an easy-grip flow control ring graduated in 450 divisions. The low dead volume pump head design ensures maximum bubble clearing and provides a typical stroke-to-stroke precision of 1% or better.

The Sub-1 is ideal for Medical Diagnostics, Biomedical and Analytical Instrumentation.


  • Valveless CeramPump®technology
  • Patent pending Adjustable Dual Eccentric bushings for precise flow calibration
  • Dispense volume as low as 1 μL / stroke
  • Compact design
  • 4 pump heads available
  • Sapphire-hard, dimensionally stable ceramic internal components
  • REACH and RoHS Certified

Regulatory Compliance



Data Sheet FMI Config Tool

Product Details

Operating Pressure Range (psig)
Operating Pressure Range (Bar)
Dispense Volume Range
0.001-0.025 mL/rev
MIN Dispense Volume
1/8" up to 5 µL /Revolution
Motor Speed Range
5-1000 rpm*
Flow Rate Range
0.005-25 mL/min*
Motor Type
1.8° Stepper Motor w/Opto Sensors NEMA Size 17 Frame
Rated Current Phase: 2.0 Amp
Flow Rate Adjustment Range
Bushings can be rotated in CW or CCW direction to modify flow rate. The top bushing is for coarse adjustement ± 25 µL. The bottom bushing is for fine adjustment ± 6 µL.
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