Dual Reciprocating Plunger Design
The LC-20AT possesses a high level of stability while maintaining high performance during routine use. The ability to remove pulsations has been improved by modifying the pump-head structure and the flow line.
Enhanced Solvent Delivery Specifications
Flow-rate accuracy and precision in the micro-flow rate region have been improved with the addition of a new type of check valve and modifications to the solvent delivery control method. Non-polar organic solvents such as hexane can be delivered stably.
New and improved plunger seal materials ensure robust, long-lasting performance. A sapphire plunger optimized according to its crystal structure and a precise plunger-holding mechanism help increase the service life of plunger seals and enable stable solvent delivery over long periods.
An optional low pressure gradient valve (LC-20AD/20AT), CBM-20Alite system controller, and a seal wash pump (LC-20AD) can now be installed inside the solvent delivery unit, enabling 4-solvent gradient elution in a compact space. The LC-20AB high-pressure binary gradient pump delivers the performance of two LC-20AD pumps in one compact unit.
|Solvent delivery method||Parallel-type double plunger||Series-type double plunger||Parallel-type double plunger (2 sets)|
|Plunger capacity||10µL||Primary side: 47µL, Secondary side: 23µL||10µL|
|Maximum discharge pressure||40MPa|
|Flow-rate setting range||0.0001 to 10.0000 mL/min.||0.001 to 10.000 mL/min.||0.0001 to 10.0000 mL/min.|
|Flow-rate accuracy||No more than 1% or 0.5µL/min., whichever is greater (0.01 to 2 mL/min.)||No more than 2% or 2µL/min., whichever is greater (0.01 to 5 mL/min.)||No more than 1% or 0.5µL/min., whichever is greater (0.01 to 2 mL/min.)|
|Flow-rate precision||No more than 0.06% RSD or 0.02 min SD, whichever is greater|
|Pulsation||0.1 MPa (for water at 1.0 mL/min. and 7MPa)||0.3 MPa (for water at 1.0 mL/min. and 7MPa)||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|
|Dimensions, weight||260 (W) x 140 (H) x 420 (D) mm, 10 kg||260 (W) x 140 (H) x 420 (D) mm, 11 kg||260 (W) x 140 (H) x 420 (D) mm, 13 kg|
|Power requirements||100 VAC, 150 VA, 50/60 Hz||100 VAC, 180 VA, 50/60 Hz|
|LC-20AD/20AT, low-pressure GE specifications||LC-20AD/20AT, high-pressure GE specifications||LC-20AB|
|Gradient type||Low-pressure mixing||High-pressure mixing|
|Number of mixed solvents||4 max.||2 or 3||2|
|Mixing concentration accuracy||0.5% max. (LC-20AD), 1.0% max. (LC-20AT)||0.5% max.|