The Nexus series syringe pumps are high-end fluid delivery systems designed to tackle extremely tough applications with high rate variation sensitivities due to high pressure and viscosity dosing. 
 
The Nexus 3000 syringe pump has high instantaneous flow stability with less than 8% of the nominal flow in nanoliter ranges for critical rate variation sensitive experiments. No other syringe pump system can come near these sub-microliter flows. Please ask Chemyx about this capability and option. 
 
The Nexus 6000 is the most powerful high pressure syringe pump on the market with 450 lbs average pushing force up to 550 lbs max force. This system has a steel brace mechanism with a bolt lock ensuring long pump life span under high stress.