The following information has been obtained from Ashco Industries.

• Ashco 3101 HPLC Pump
  
  Used for isocratic applications, low pressure gradient systems, and high pressure binary gradient systems.
  
  Flow Rates: 0.01 to 9.99 ml/min (50 uL head)
  Pressure: 0 to 6,000psi
  Accuracy: 2%
  Precision: 0.2% RSD
  
  For more information, visit Ashco's main page or specifications page.
  
  
• Ashco 3101G HPLC Pump
  
  Used for high pressure mixing Binary Gradient Systems.
  
  Flow Rates: 0.001 to 9.99 ml/min. (50 uL head)
  Pressure: 0 to 6,000 psi (50 uL head)
  Accuracy: 2%
  Precision: 0.2% RSD
  
  For more information, visit Ashco's main page or specifications page.