ReaXus LS Class

High Performance Isocratic Pumps

The reliable ReaXus LS Class consists of single-headed, positive displacement piston pumps incorporating advanced cam designs for very low pulsation.

The pumps are ideal for a wide variety of HPLC applications (including Biocompatible separations), Semi-Prep LC, metering & dispensing, and general laboratory use. Standard fluid path materials are Stainless Steel. Other available features include jacketed heads for temperature controlled processes. With 10 mL/min, 40 mL/min, and 100 mL/min versions available, and pressure capability up to 6,000 psi, these versatile pumps will meet the most demanding applications.


ReaXus LS Class DatasheetDatasheet
Pumps Overview BrochureBrochure
ReaXus LS Class User ManualUser Manual
Pumps Pharmaceutical BrochureBrochure


When you purchase instruments from Teledyne ISCO, you not only receive innovative, high quality products, you also receive excellent customer service and product support. Your initial purchase is only the beginning of Teledyne ISCO's ongoing commitment to their customers.


​ReaXus LS Class

Flow Rate Range and Max. Pressure Ratings*

​0.0-10.000 mL/min (6,000 psi)

0.0-40.000 mL/min (1,600 psi)

0.0-100.0 mL/min (600 psi)


≤2.0% @ 1 mL/min and 1,000 psi (10 mL, 40 mL)

≤4.0% @ 50 mL/min and 500 psi (100 mL)

Pressure Accuracy
​±2.0% of full scale pressure
​Flow Precision

​0.2% RSD

Flow Accuracy

​Within 2.0% of set flow rate, 0.20 mL/min and above; 80:20 Water/IPA @ 1,000 psi (10 mL)

Within 2.0% of set flow rate, 0.80 mL/min and above; 80:20 Water/IPA @ 1,000 psi (40 mL)

Within 2.0% of set flow rate, 2.0 mL/min and above; 80:20 Water/IPA @ 500 psi (100 mL)

​Wetted Materials
​​(See Options on Datasheet), Synthetic Ruby, Sapphire, UHMWPE, PTFE

6.5" H x 7" W x 16" D

(16.5 x 17.8 x 40.6 cm)

​15.3 lbs. (6.9 kg)
​100-240 Vac (±10%), 50-60 Hz
RS-232, Micro USB, Run/Stop, Analog (0-10V, 4-20mA)

*Flow Rate is dependent on solvent selection and operating pressure.

 **Pulsation value with pulse dampener.


​​For a full list of product specifications, see the datasheet.




Features include automatic pressure compensation, Pulse Dampener, integrated Prime-Purge Valve, interactive keypad control, and complete PC control and status through RS-232 and Micro USB 2.0 ports. The unique LS Class provides the highest performance/cost ratio in a compact package.


Flow Rate             ​Pressure              ​Fluid Path             ​Control                

​10 mL/min

40 mL/min

100 mL/min

​Up to 6,000 psi (10 mL/min)

​Stainless Steel


​RS-232, Micro USB, Run/Stop, Analog (0-10V, 4-20mA)