L-2100 SMASH Pump

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Highly accurate liquid delivery at a semi-micro flow rate Having a micro-plunger of novel design, the Model L-2100 pump (SMASH) can feed liquid with extremely high accuracy at a semi-micro flow rate. Moreover, its new-type check valve ensures the high accuracy in liquid delivery. This pump is particularly suitable for semi-micro analysis at a flow rate of 0.05 to 1 mL/min. Enhancement in flow rate accuracy The double-speed control method has been used for pulsation correction in the conventional design of Hitachi HPLC pumps. In the Model L-2100 pump (SMASH), the start of double-speed drive is made at an earlier point of time for further reduction in pulsation. Higher reproducibility of retention time in gradient-elution analysis In gradient analysis, the use of the Model L-2200 autosampler provides excellent reproducibility of retention time for ensuring high accuracy in analysis. This advantageous feature has been implemented by means of synchronizing the injection timing of the autosampler with the drive timing of the pump. High-accuracy solvent mixing ratio in high-pressure gradient analysis For high-pressure gradient analysis, a pressure sub-sensor is added to each of two pumps in addition to a normal pressure sensor equipped on each of them, i.e., a total of four sensors are employed. These four sensors ensure high stability of a solvent mixing ratio in liquid delivery, realizing high-accuracy gradient analysis with excellent reproducibility. This arrangement is particularly suitable for analyses in the micro region of 50 µL/min.

Specifications

Item L-2100 SMASH Pump Accuracy +/- 2 µL/min (0.005 to 0.050 mL/min) +/- 2 % (0.051 to 2.000 mL/min) +/- 4 % (2.001 to 2.499 mL/min) Precision +/-0.075% RSD or 0.02 min SD at 0.2 mL/min Constant pressure 290 to 5600 psi at 0 to 1.25 mL/min Solvent delivery 25 µL/stroke Dimensions 13.5 in (W) x 15.75 in (D) x 6.0 in (D) (340 mm (W) x 400 mm (D) x 150 mm (D)) Weight approx. 24 lbs (11 kg) HIGH PRESSURE GRADIENT Flow rate range 0.001 to 2.499 mL/min (0.05 to 2.00 mL/min recommended) Binary Up to 2 eluents Composition range 1 to 100% (0.1% increments) Accuracy +/- 1% (0.2 mL/min) Precision 0.1% RSD or 0.02 min SD at 0.2 mL/min LOW PRESSURE GRADIENT Flow rate range 0.001 to 2.499 mL/min (0.2 to1.8 mL/min recommended) Quaternary Up to 4 eluents Composition range 0 to 100% (0.1% increments with CDS; 1% increments with front panel control) Accuracy +/- 1% (0.2 mL/min) Precision 0.1% RSD or 0.02 min SDat 0.2 mL/min