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ProStar 210/218 Solvent Delivery Modules

ProStar 210/218 Solvent Delivery Modules offer a variety of pump head materials and configurations for all applications. Choose from two, three, or four pump gradients, different sizes for different flow rates, and optional piston wash. Experience hydraulic design, user-friendly interface, and precise control of flow rates, pressure, and solvent composition. Solve common problems like worn seals, dirty check valves, and low flow with ProStar 210/218 Solvent Delivery Modules.

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ProStar 210/218 Solvent Delivery Modules

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  1. ProStar 210/218 Solvent Delivery Modules

  2. ProStar 210/215 Solvent Delivery Modules • For ALL applications (analytical to prep) • Variety of pump head materials & configurations

  3. Available Pumps

  4. Major features • Two, three or four pump gradients • Different sizes for different flow rates • Different materials • Optional piston wash • Different pressure ratings (dependent on pump type)

  5. ProStar 210/215 Pumps • Hydraulic design • System configurations • Electrical connections and signals • Other capabilities • User interface • Product specifications

  6. Hydraulic Design • Ball and seat check valve

  7. Pump head

  8. Pump Head Materials • Stainless steel • Good for most general applications • Titanium • Better for high salt content applications, superior corrosion resistance • Perceived better for biological applications • More expensive, includes piston wash • Peek • Better for high salt content applications • Perceived best for Life Science applications • More expensive, + piston wash. Limited pressure

  9. Pump Head Feature • Piston wash • Either Holds liquid (water) or rigged for constant recycle • Back of Piston is rinsed automatically when it moves back-and-forth in the water • Only on some pump heads • Useful when using salt mobile phases • Perceived by customers as always good • More expensive

  10. Pump Head Wash head Standard head

  11. Pump Heads 10WS 10SS Wash head Standard head

  12. Pump head • Programmable re-fill time • 100 msec to 1 sec • Faster gives less pulsations • Slower gives less possibility of Priming Issues with viscous mobile phases

  13. Pressure limits

  14. Pressure module with pulse damper • Flow rate dependent • 10, 50,100 and 200 mL/min • Monitors pressures for PMIN and PMAX calculations • Monitors pressures for compressibility compensation • Enter 2 parameters for any solvent • Corrects flow rate on the piston’s initial forward movement • Teflon Membrane Design with Hexane offering damping resistance • Different sizes for different flow rates

  15. Transducer Pulse Damper Design Lock Nut Transducer Body Teflon membrane Cap

  16. Binary and Ternary Gradient Systems • Two or three pumps, high pressure proportioning + high pressure mixing • Can be a mixture of 210/218 pumps • Can be different pump heads but the flow will be limited to the smallest head • Only need ONE pressure module/pulse damper

  17. Ternary gradient hydraulics Injector valve Pump A Tee Column Pump B Mixer Detector Pump C Back pressure regulator

  18. Flow Accuracy • Flow accuracy specification • +/- 1% of set flow • +/- 0.05% of maximum flow • Measured %RSD =0.35% • Absolute flow can be adjusted using compressibility compensation

  19. Flow precision • Flow precision +/- 0.1% RSD • Measured isocratic • 0.045% RSD overall • 0.02% RSD best 8 consecutive runs • Measured gradient • 0.1% RSD overall • 0.04% RSD best 8 consecutive runs

  20. Gradient delay and accuracy

  21. Gradient linearity -100%

  22. Gradient linearity - 10%

  23. Proportioning accuracy and precision • Precision - 0.3% to 0.03% absolute • Accuracy - 0.5% absolute - usually on the step from 0%

  24. Proportioning accuracy and precision • 1% steps

  25. Proportioning accuracy and precision • 10% steps

  26. Isocratic precision

  27. Mixers • Dynamic mixer • Always needed for 210 and 218 to keep composition mixed efficiently • Built into 210 and 218. Turns on when pump is turned on. Dual Chamber, dual elements rotating opposite of each other. • “T” mixer • used for ternary gradient systems before dynamic mixer

  28. Gradient delay and accuracy - results • Gradient delay - ( mixer delay) 0.55 mL • Mixer flush out (mixer flush out) 2.22 mL

  29. User interface • 2 line display • Numeric keypad • Unique Features • Negative times • Single point control for multi-pump and UV detector • Advised to use controller • Control 320 UV detector

  30. Back Panel

  31. Electrical Connections • Outputs • 3 contact closures • Injection mark • Time programmed mark • + 5 volts • Analog out • Solvent composition • Flow • Pressure • Wavelength Control of 320

  32. Electrical Connections • Inputs • Stop (Stop pump and method) • Hold (stop method, keep pump running) • One 22-bit ADC for data handling in Star Workstation

  33. Other features • Flow programming • 100 method - unlimited lines • Built in automation • Failure operation - shut down method • Control of units for pressure display (Mpa, psi, Bar) • Solvent compressibility compensation • Single point control of gradient

  34. Problems • Worn Seals • Dirty Check Valves • Un-primed pump • Bad fittings • --------------------------------- • High Pressure • Fluctuating Pressure • Low Flow • Communications problems • Customer chemistry

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