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Shimadzu LC-20 Series

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LC-20 Series

Performance in the micro-flow rate range less than 50uL/min has been improved in the LC-20AD/AB pumps. First, a new spring-loaded check valve design has been incorporated. The spring assists in closing the check valve to prevent leak-back, resulting in more accurate and precise fl ow rates and gradient formation. This new check valve design will also increase the dependability and stability of the pump with non-polar mobile phases like hexane where static buildup can cause check valve problems. Second, the firmware has been modified for enhanced pulsation correction of the high-speed drive motor, yielding pulse-free solvent delivery. The LC-20AD/AB pumps are ideal as a front-end component for LCMS systems where stable, quiet, and precise solvent delivery is critical for optimal performance from the mass spectrometer. Of course, these improvements will enhance the performance of other detectors as well.

Models

LC-20AD
Attributes

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Number of Solvents 4
Pump Max. Pressure 5801.5 psi
Flow Precision ± .3 % (RSD: 0.1% max.)
Flow Accuracy ± 1 % or 0.5µL/ min., whichever is greater (0.01 to 2 mL/min.)
Flow Delivery Double Piston Parallel-type
Standard Flow Rate .001 to 10 ml/min
Depth 420 in
Height 140 in
Width 260 in
Power Requirements 100 VAC, 150 VA, 50/60 Hz
Weight 10 kg
Additional Specifications Gradient type: Low-pressure mixing (LC-20AD/20AT, low pressure GE specifications)
Mixing concentration accuracy: 0.5% max. (LC-20AD), 1.0% max. (LC-20AT)
Plunger capacity: 10ΜL
Pulsation: 0.1 MPa (for water at 1.0 mL/min. and 7MPa)
Constant-pressure solvent delivery: Supported
Plunger rinsing mechanism: Manual rinsing or automatic rinsing using optional product
Safety measures: Liquid-leakage sensor, high-pressure/low-pressure limits
Operating temperature range: 4oC to 35oC (non-condensing atmosphere)
LC-20AT
Attributes

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Number of Solvents 3
Pump Max. Pressure 5801.5 psi
Flow Precision ± .3 % (RSD: 0.1% max.)
Flow Accuracy ± 2 % or 2µL/ min., whichever is greater (0.01 to 5 mL/min.)
Flow Delivery Double Piston Serial-type
Standard Flow Rate .001 to 10 ml/min
Depth 420 mm
Height 140 mm
Width 260 mm
Power Requirements 100 VAC, 150 VA, 50/60 Hz
Weight 11 kg
Additional Specifications Gradient type: High-pressure mixing (LC-20AD/20AT, high pressure GE specifications)
Mixing concentration accuracy 0.5% max. (LC-20AD), 1.0% max. (LC-20AT)
Plunger capacity: Primary side: 47ΜL, Secondary side: 23ΜL
Pulsation: 0.3 MPa (for water at 1.0 mL/min. and 7MPa)
Constant-pressure solvent delivery: Supported
Plunger rinsing mechanism: Manual rinsing or automatic rinsing using optional product
Safety measures: Liquid-leakage sensor, high-pressure/low-pressure limits
Operating temperature: range 4oC to 35oC (non-condensing atmosphere)
LC-20AB
Attributes

Edit Model

Number of Solvents 2
Pump Max. Pressure 5801.5 psi
Flow Precision ± .3 % (RSD: 0.1% max.)
Flow Accuracy ± 1 % or 0.5µL/ min., whichever is greater (0.01 to 2 mL/min.)
Flow Delivery Double Piston Parallel-type
Standard Flow Rate .001 to 10 ml/min
Depth 420 mm
Height 140 mm
Width 260 mm
Power Requirements 100 VAC, 180 VA, 50/60 Hz
Weight 13 kg
Additional Specifications Gradient type: High-pressure mixing
Mixing concentration accuracy: 0.5% max.
Plunger capacity: 10uL
Pulsation: 0.1 MPa (for water at 1.0 mL/min. and 7MPa)
Constant-pressure solvent delivery: Supported
Plunger rinsing mechanism: Manual rinsing or automatic rinsing using optional product
Safety measures: Liquid-leakage sensor, high-pressure/low-pressure limits
Operating temperature range: 4oC to 35oC (non-condensing atmosphere)

Features

LC-20AD  
Parallel Double Micro Plunger  
      
  • 0.0001 to 10 mL/min  
  • 10uL piston stroke volume  
  • 3nL/step motor resolution  
  
  
LC-20AB  
Binary Solvent Delivery Unit  
      
  • Two LC-20AD pumps in one compact module  
  • Identical performance to the LC-20AD  
  
  
LC-20AT  
Tandem Dual Plunger  
      
  • 0.001 to 10 mL/min  
  • 47 uL primary and 23 uL secondary piston stroke volume  
  • Improved ability to handle bubbles  

Photos

LC-20AD/AT/AB Pumps

LC-20AD/AT/AB Pumps

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pressure pump for HPLC 20AD does not rise

  I  am working with Shimadzu HPLC with 20AD pump. I used 0.05M  EDTA  with 2% glacial acetic acid solution to clean the column at flow rate of 0.05mL/sec overnight. After finishinh I started using my moblie phase which...

CBM Error;Invalid Function

We recently switched from Class VP software to Shimadzus Labsolutions software. While in the process of configuring the HPLCs (we have 2 of tthem) to the new computer, we're having the issue of getting both of our LC-20ATs to connect. We're...

% Error ???

What is the standard percent error + and - on a Shimadzu LC-20AT, when used in the ethanol industry?  Figuring ethanol % on wt./vol  basis.

See all 6 Shimadzu LC-20 Series Questions and Answers There are 6 Threads

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