ReaXus LD Class

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ReaXus-LD-class-_500.jpg
ReaXus-LD-class-_500.jpg
LD Class Jacketed Heads
ReaXus Interface Closeup
LD Class Rear Connectors

Dual Piston Pumps for Low Pulsation Requirements

The versatile LD Class consists of dual-headed, positive displacement piston pumps, delivering unmatched performance for analytical, flash, and small-scale preparative chromatography applications.

The pumps are designed for high flow rate accuracy and low pulsation required for Analytical Liquid Chromatography (HPLC). Standard fluid path materials are Stainless Steel, PEEK, in addition to optional Hastelloy. Other available features include jacketed heads for temperature controlled processes. With 12 mL/min, 36 mL/min, and 100 mL/min versions, reaching pressures up to 6,000 psi, these pumps will meet the performance requirements of demanding HPLC needs.

The high performance linear cams, along with automatic pressure compensation, provide precise flow rates for very accurate high pressure and low pressure gradients. Standard features include an integrated Prime-Purge Valve, Pulse Dampener, interactive keypad control, and complete PC control status through RS-232 and Micro USB 2.0 ports. The LD Class provides the precise flow and low pulsation for the most challenging separations.

Flow Rate

12 mL/min
36 mL/min
100 mL/min​

Pressure

Up to 6,000 psi

Fluid Path

Stainless Steel
PEEK
Hastelloy

Control

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

Pump Head Material Option​s​​

Dual Stainless Steel
Dual PEEK
Dual Hastelloy

Specifications

​ReaXus LD Class

Flow Rate Range and Max. Pressure Ratings* ​0.0-12.000 mL/min (6,000 psi)
0.0-36.00 mL/min (6,000 psi)
0.0-100.0 mL/min (1,500 psi)
​Pulsation**≤2% @ 1 mL/min and 80:20 Water/IPA; 1,000 psi (12 mL)
≤1.0% @ 4 mL/min and 80:20 Water/IPA; 1,000 psi (36 mL)
≤2.0% @ 50 mL/min and 80:20 Water/IPA; 250 ps (100 mL)
Pressure Accuracy±50 psi
​Flow Reproducibility0.5% RSD (1.000 – 12.000 mL/min; 80:20 Water/IPA; 1,000 psi) (12 mL)
0.5% RSD (1.00 – 36.00 mL/min; 80:20 Water/IPA; 1,000 psi) (36 mL)
0.5% RSD (1.0 – 100.0 mL/min; 80:20 Water/IPA; 500 psi) (100 mL)
Flow Rate Accuracy±2% (1.000 – 12.000 mL/min; 80:20 Water/IPA; 1,000 psi) (12 mL)
±2% (2.00 – 32.00 mL/min; 80:20 Water/IPA; 1,000 psi) (36 mL)
±2% (0.5 – 100.0 mL/min; 80:20 Water/IPA; 500 psi) (100 mL)
​Wetted MaterialsPEEK pumps may include: PEEK, Synthetic Ruby, Sapphire, Zirconia, UHMWPE, FFKM, PFA, ETFE
Stainless Steel pumps may include: 316 Stainless Steel, PEEK, Synthetic Ruby, Sapphire, Zirconia, UHMWPE, PFA, PTFE, ETFE
Hastelloy pumps may include: Hastelloy C-276, Synthetic Ruby, Sapphire, Zirconia, UHMWPE, FFKM, PFA, PTFE, ETFE
Dimensions6.4" H x 9.9" W x 17.5" D
(16.3 x 25.1 x 44.5 cm)
​Weight21.4 lbs. (9.7 kg)
Power​100-240 Vac (±10%), 50-60 Hz
ControlRS-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 ​​datas​​heet​​.


Dual-Piston Pumps

Pump Class Material Options Flow Range (mL/min) Flow Accuracy Pressure Limit (psi) Stroke Volume (µL)
Temp Jacket
Pump Mode Dimensions/ Weight
LD Class Stainless Steel
PEEK
0.000–12.000 2% 6,000 SS
5,000 PEEK
30.0 NO Constant Flow 6.4”H x 10”W x 17.5”D
(16.1 x 25.1 x 44.3 cm)
21.3 lbs. (9.7 kg)
Stainless Steel
PEEK
Hastelloy
0.00 – 36.00 2% 6,000 SS, Hastelloy
5,000 PEEK
62.8 NO (SS, PEEK)
YES (Hastelloy)
Stainless Steel
PEEK
Hastelloy
0.0 – 100.0 2% 1,500 251.4 NO (SS,  PEEK)
YES (Hastelloy)
PR Class Stainless Steel
PEEK
Hastelloy
0.0 – 100.0 3% 4,000 251.4 NO (SS, PEEK)
YES (Hastelloy)
Constant Flow 6.4”H x 10”W x 17.5”D
(16.1 x 25.1 x 44.3 cm)
24.2 lbs. (11.0 kg)
Stainless Steel
PEEK
Hastelloy
0.0 – 300.0 3% 1,000 565.6 NO (SS, PEEK)
YES (Hastelloy)
CP Class Stainless Steel 0.000–12.000 2% 18,000 31.4 NO Constant Pressure 6.4”H x 10”W x 17.5”D
(16.1 x 25.1 x 44.3 cm)
21.3 lbs. (9.7 kg)
Stainless Steel
Hastelloy
0.00 – 24.00 2% 10,000 62.8 NO (SS)
YES (Hastelloy)
Stainless Steel 0.0 – 100.0 2% 4,000 251.0 NO
HF Series Stainless Steel 0.0 – 300.0 5% 10,000 452.4 NO Constant Flow/ Constant Pressure 8.9”H x 13.9”W x 22.1”D
(22.6 x 35.3 x 56.1 cm)
49.2 lbs. (22.3 kg)

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