WELCH Self-Cleaning Vacuum System 2028

List Price:

$5,195.00

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Product Details

  • Automatic Self-cleaning purge maintains efficiency, extends diaphragm life
  • Free air displacement: 35 L/min (1.2 CFM)
  • Incremental ballast button enables fast response to bumping / foaming

Suggested Applications

Complete programmable oil-free dry vacuum systems for rotary evaporators and concentrators. Corrosion-resistant PTFE diaphragm vacuum pump systems enable superior control and efficiency for each evaporation. Store up to 5 methods for 2 solvent evaporations. Provides walk-away solvent stripping in flasks up to 5 L. Use 2 torr Model 2028 for solvents with atmospheric B.P. <160o C - rapid DMF stripping at 4 ml/min. Includes keypad controller interface with LED readout. Inlet and exhaust separators protect pump and lab atmosphere.


Product Family Specifications

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Model Number 2025 2027 2028 2026
Applications Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes. Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes. Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes. Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes.
Type Laboratory Vacuum Pumps Laboratory Vacuum Pumps Laboratory Vacuum Pumps Laboratory Vacuum Pumps
Free Air Displacement m3/hr (l/min.) @50Hz 1.2(34) 1.2(35) 1.2(35) 1.2(35)
Ultimate Pressure 1.7(28) 1.8(29) 1.8(29) 1.8(29)
Max Pressure PSIG (pascal) 29.5 29.85 29.85 29.85
Adjustable Vac. / Gas Ballast 1/5 1/5 1/5 1/5
Tubing Needed Yes Yes No Yes
Intake Thread NPT 1/4 1/4 1/4 1/4
ISO Exhaust / Intake Flange 3/8 3/8 3/8 3/8
Overall Dimensions LxWxH in. (cm) 13.6x12x11.3 (34.5x30.5x28.7) 13.6x12x11.3 (34.5x30.5x28.7) 13.6x12x11.3 (34.5x30.5x28.7) 13.6x12x11.3 (34.5x30.5x28.7)
Ship Weight 36(16.3) 36(16.3) 36(16.3) 36(16.3)
Intake Catch Jar Yes Yes Yes Yes
Exhaust Catch Jar Yes Yes Yes Yes
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