The ULP21-2540 Reverse Osmosis Membrane is a high-efficiency, ultra-low-pressure RO element engineered for commercial and light-industrial water treatment applications where energy efficiency and consistent water quality are critical. Manufactured using advanced thin film composite (TFC) membrane technology, the ULP21-2540 provides excellent rejection of dissolved salts, total dissolved solids (TDS), and other common water contaminants.
Built in the industry-standard 2.5" x 40" (2540) configuration, this membrane is compatible with a wide range of commercial reverse osmosis systems. Its ultra-low pressure design allows systems to operate efficiently at reduced feed pressures, lowering pump energy requirements, minimizing operational costs, and extending overall system life.
The ULP21-2540 is commonly used in commercial RO systems, equipment feed water applications, spot-free rinse systems, and compact industrial processes that require dependable water purification. High salt rejection ensures stable permeate quality, while durable membrane construction supports long service life when paired with proper pretreatment and routine maintenance.
For system operators seeking a balance of performance, efficiency, and reliability in a compact membrane format, the ULP21-2540 delivers a cost-effective reverse osmosis solution without compromising water quality.
ULP21-2540 Reverse Osmosis Membrane – Ultra-Low Pressure RO Element
Model
ULP21-2521
Membrane Type
Reverse Osmosis (RO)
Technology
Thin Film Composite (TFC)
Element Size
2.5" x 40" (2521)
Nominal Flow Rate
~1,000 GPD (typical)
Salt Rejection
≥ 99% (typical)
Operating Pressure
Ultra-Low Pressure
Max Operating Temperature
113°F (45°C)
Max Feed TDS
2,000 ppm
Operating pH Range
2 – 11
Cleaning pH Range
1 – 12
Chlorine Tolerance
< 0.1 ppm
Applications
Commercial RO, Compact RO Systems
