Syringe Pump Flow Rate Calculation

This digital syringe pump (dLSP500) is designed for precision fluid handling laboratory applications. It accepts syringe size from 0.5uL to 60mL. Let's consider the dLSP500 syringe pump to estimate the flow rate range.  This pump has a linear translation speed range of 0.0833mm/min to 180mm/min, with a resolution of 0.03255µm/µstep. Table 1, 2, and 3 list commonly used syringe sizes and their inner diameters. The inner diameter of a 5 mL BD plastic syringe is approximately 11.98 mm. Using this information, we can calculate that the flow rate of the syringe pump ranges from 9.389 µL/min to 20.289 mL/min. The flow rates for other syringe sizes can be calculated in a similar manner.  In addition, the average pressures for any syringe pump and syringe together can be estimated by dividing the average force applied on the syringe pump and the syringe surface area.   If you have any questions about this, please don't hesitate to contact us at sales at auroraprosci dot com.




Table 1 BD Plastipak Luer Lock Syringes Vs Syringe ID 

Syringe SizeInner Diameter (mm)-Nominal
1 mL4.70 mm
3 mL8.57 mm
5 mL11.98 mm
10 mL14.43 mm
20 mL18.97 mm
30 mL21.48 mm
50 mL26.46 mm

 Table 2 BD Glass Syringes Vs Syringe ID

Syringe SizeInner Diameter (mm)-Nominal
0.5 mL4.64 mm
1.00 mL4.64 mm
2.00 mL8.93 mm
2.50 mL8.66 mm 
3.00 mL8.93 mm
5.00 mL11.73 mm
10.00 mL14.68 mm
20.00 mL19.60 mm
30.00 mL22.70 mm
50.00 mL28.03 mm
60.00 mL28.60 mm


Table 3 Hamilton Glass Syringes vs Syringe ID

Syringe SizeInner Diameter (mm)-Nominal
0.5 µL 0.10 mm
1.00 µL0.15 mm
2.00 µL0.21 mm
5.00  µL0.33 mm 
10.00 µL0.48 mm
25.00 µL0.73 mm
50.00 µL1.03 mm
100.00 µL1.46 mm
250.00 µL2.30 mm
500.00 µL3.26 mm
1.00 mL 4.61 mm
2.50 mL 7.28 mm
5.00 mL10.30 mm
10.00 mL14.57 mm
25.00 mL23.03 mm
50.00 mL32.57 mm





  • Syringe Pump Flow Rate Calculation

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Tags Sample Preparation, Drug Delivery, Reagent Injection, Cell Culture, Point-of-care testing (POCT), In vitro diagnostics (IVD), Syringe Pump