DUPONT FILMTEC Brackish Water RO 2.5″ Membranes – Aqua Components

DUPONT FILMTEC BW30 PRO 2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:52:45 +0000

DUPONT FILMTEC Fiberglassed Elements for Light Industrial Systems.

Important Information

Proper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved.

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows:

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Feed Spacer Thickness (mil)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
BW30-PRO-2540	80766	28	850 (3.2)	99.5

Features

DUPONT FILMTEC™ brackish water reverse osmosis membrane elements provide consistent, outstanding system performance in light industrial applications.

DUPONT FILMTEC LE-4040 delivers highest performance at lowest pressure resulting in less energy usage and lower costs.
DUPONT FILMTEC BW30-4040 is the industry standard for reliable operation and production of the highest quality water.
DUPONT FILMTEC BW30-PRO-2540 elements are designed for systems smaller than 1 gpm (0.2 m³/h) offering a hard shell exterior for extra strength.

Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature: 113°F (45°C)
Maximum Operating Pressure 600 psi (41 bar)
Maximum Feed Flow Rate – 4040 elements 16 gpm (3.6 m³/h)
Maximum Feed Flow Rate – 2540 elements 6 gpm (1.4 m³/h)
Maximum Pressure Drop 15 psig (1.0 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Industrial water demineralization
Production of municipal drinking water
Water reuse

Docs

DUPONT FILMTEC BW30-PRO-2540 Membrane

DUPONT FILMTEC XLE PRO 2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:52:44 +0000

DUPONT FILMTEC XLE-PRO-2540 is the most productive, lowest pressure RO membrane available, delivering the lowest total system cost. It may be cleaned over a wide pH range (pH 1-13) for the most effective cleaning.

Advantages

High flux results in high yields
High rejection provides good water quality
Filmtec performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Applied Pressure psig (bar)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
XLE-PRO-2540	12082909	125 (8.7 bar)	1,000 (3.8)	99

Features

New DUPONT FILMTEC™ XLE elements offer better system performance and economics by operating at very low applied pressure. XLE membrane, made with a patented technology, provides consistent and reliable system performance. And for added convenience, XLE elements are available in a dry state for rapid start-up (see Figure 1 on reverse). The new XLE series of elements replaces TW30LE elements which were made with an older membrane technology.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psi (41 bar)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

Dow Filmtec XLE-PRO-2540 Membrane

DUPONT FILMTEC TW30 PRO 2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:52:42 +0000

DUPONT FILMTEC TW30 PRO 2540 is an industry standard for reliable operation and production of high quality water. It may be cleaned over a wide pH range (pH 1-13) for the most effective cleaning.

Advantages

High flux results in high yields
High rejection provides good water quality
Filmtec performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Feed Spacer Thickness (mil)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
TW30 PRO 2540	80643	28	1000 (3.8)	99.5

Features

A complete range of DUPONT FILMTEC™ 2540-size elements is available to meet a wide variety of customer needs for commercial applications, from the highest purity water to the lowest total system costs.

DUPONT FILMTEC XLE-2540 is the most productive, lowest pressure RO membrane available, delivering the lowest total system cost.
DUPONT FILMTEC LP-2540 delivers high quality water at low pressure operation. The LP-2540 replaces many “first generation” low pressure membrane elements and will purify more water in many older systems, especially on cold water feeds.
DUPONT FILMTEC TW30 PRO 2540 is the industry standard for reliable operation and production of the highest quality water.

Tape-wrapped elements are built with the same high quality membranes and materials of construction as industrial elements, without the hard outershell. This makes them more economical for commerical systems with one or two elements per housing.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psig (41 bar)
Maximum Feed Flow Rate 6 gpm (1.4 m³/hr)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning (30 min.) 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

DUPONT FILMTEC TW30 PRO 2540 Membrane

DOW FILMTEC LP-2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:33 +0000

DOW FILMTEC LP-2540 delivers high quality water at low pressure operation and can replace many “first generation” low pressure membrane elements and purify more water in many older systems, especially on cold water feeds.

Advantages

High rejection results in excellent water quality;
Low energy usage reduces power consumption and costs;
Durable with good cleanability for long element life;
Filmtec Performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Feed Spacer Thickness (mil)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
LP-2540	231653	28	1,000 (3.8)	99.2

Features

A complete range of DOW FILMTEC™ 2540-size elements is available to meet a wide variety of customer needs for commercial applications, from the highest purity water to the lowest total system costs.

DOW FILMTEC XLE-2540 is the most productive, lowest pressure RO membrane available, delivering the lowest total system cost.
DOW FILMTEC LP-2540 delivers high quality water at low pressure operation. The LP-2540 replaces many “first generation” low pressure membrane elements and will purify more water in many older systems, especially on cold water feeds.
DOW FILMTEC TW30-2540 is the industry standard for reliable operation and production of the highest quality water.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psig (41 bar)
Maximum Feed Flow Rate 6 gpm (1.4 m³/hr)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning (30 min.) 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Commercial water demineralization

Docs

DOW FILMTEC LP-2540 Membrane

DUPONT FILMTEC TW30-2514 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:33 +0000

DOW FILMTEC TW30-2514 reverse osmosis (RO) elements offer high quality water for small commercial systems purifying less than one gallon per minute (0.2 m³/d) of RO water. In addition to high quality water and low energy costs, DOW FILMTEC membranes also deliver savings by providing long lasting and reliable performance.

Advantages

High flux results in high yields;
High rejection provides good water quality;
Filmtec performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

SPECIFICATIONS

Product	Part Number	Applied Pressure psig (bar)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
TW30-2514	80639	225 (15.5)	200 (0.8)	99.5

Features

DOW FILMTEC™ reverse osmosis (RO) elements offer the highest quality water for small commercial systems purifying less than one gallon per minute (0.2 m³/d) of RO water.

DOW FILMTEC membranes are available in a variety of sizes to meet a wide range of space requirements.
DOW FILMTEC XLE extra low energy elements operate at the lowest pressure in the industry, resulting in lower energy costs and enabling system builders to use lower cost components.
In addition to the highest quality water and the lowest energy costs, DOW FILMTEC membranes also deliver savings by providing the industry’s longest lasting and most reliable performance.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psig (41 bar)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning (30 min.) 1 – 13
Maximum Feed Silt Density Index (SDI) 5
Free Chlorine Tolerance <0.1 ppm>

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

DUPONT FILMTEC TW30-2514 Membrane

DUPONT FILMTEC TW30-2521 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:33 +0000

DOW FILMTEC TW30-2521 reverse osmosis (RO) elements offer high quality water for small commercial systems purifying less than one gallon per minute (0.2 m³/d) of RO water. In addition to high quality water and low energy costs, DOW FILMTEC membranes also deliver savings by providing long lasting and reliable performance.

Advantages

High flux results in high yields;
High rejection provides good water quality;
Filmtec performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

SPECIFICATIONS

Product	Part Number	Applied Pressure psig (bar)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
TW30-2521	80641	225 (15.5)	325 (1.23	99.5

Features

DOW FILMTEC™ reverse osmosis (RO) elements offer the highest quality water for small commercial systems purifying less than one gallon per minute (0.2 m³/d) of RO water.

DOW FILMTEC membranes are available in a variety of sizes to meet a wide range of space requirements.
DOW FILMTEC XLE extra low energy elements operate at the lowest pressure in the industry, resulting in lower energy costs and enabling system builders to use lower cost components.
In addition to the highest quality water and the lowest energy costs, DOW FILMTEC membranes also deliver savings by providing the industry’s longest lasting and most reliable performance.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psig (41 bar)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning (30 min.) 1 – 13
Maximum Feed Silt Density Index (SDI) 5

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

DUPONT FILMTEC TW30-2521 Membrane

DOW FILMTEC XLE-2521 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:33 +0000

DOW FILMTEC XLE-2521 reverse osmosis (RO) elements offer high quality water for small commercial systems purifying less than one gallon per minute (0.2 m³/d) of RO water. DOW FILMTEC XLE extra low energy elements operate at the lowest pressure available in the industry today, resulting in lower energy costs and enabling system builders to use lower cost components.

Advantages

High flux results in high yields
High rejection provides good water quality
Filmtec performance and quality.

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Applied Pressure psig (bar)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
XLE-2521	154530	100 (6.9)	365 (1.4)	99

Features

New DOW FILMTEC™ XLE elements offer better system performance and economics by operating at very low applied pressure. XLE membrane, made with a patented technology, provides consistent and reliable system performance. And for added convenience, XLE elements are available in a dry state for rapid start-up (see Figure 1 on reverse). The new XLE series of elements replaces TW30LE elements which were made with an older membrane technology.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psi (41 bar)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

DOW FILMTEC XLE-2521 Membrane

DUPONT (FILMTEC) BW30-2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:32 +0000

DUPONT FILMTEC Fiberglassed Elements for Light Industrial Systems.

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Feed Spacer Thickness (mil)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
BW30-2540	80766	28	850 (3.2)	99.5

Features

DUPONT FILMTEC™ brackish water reverse osmosis membrane elements provide consistent, outstanding system performance in light industrial applications.

DUPONT FILMTEC LE-4040 delivers highest performance at lowest pressure resulting in less energy usage and lower costs.
DUPONT FILMTEC BW30-4040 is the industry standard for reliable operation and production of the highest quality water.
DUPONT FILMTEC BW30-2540 elements are designed for systems smaller than 1 gpm (0.2 m³/h) offering a hard shell exterior for extra strength.

Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature: 113°F (45°C)
Maximum Operating Pressure 600 psi (41 bar)
Maximum Feed Flow Rate – 4040 elements 16 gpm (3.6 m³/h)
Maximum Feed Flow Rate – 2540 elements 6 gpm (1.4 m³/h)
Maximum Pressure Drop 15 psig (1.0 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Industrial water demineralization
Production of municipal drinking water
Water reuse

Docs

DUPONT FILMTEC BW30-2540 Membrane

DUPONT FILMTEC TW30-2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:32 +0000

DUPONT FILMTEC TW30-2540 is an industry standard for reliable operation and production of high quality water. It may be cleaned over a wide pH range (pH 1-13) for the most effective cleaning.

Advantages

High flux results in high yields
High rejection provides good water quality
Filmtec performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Feed Spacer Thickness (mil)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
TW30-2540	80643	28	1000 (3.8)	99.5

Features

DOW FILMTEC XLE-2540 is the most productive, lowest pressure RO membrane available, delivering the lowest total system cost.
DOW FILMTEC LP-2540 delivers high quality water at low pressure operation. The LP-2540 replaces many “first generation” low pressure membrane elements and will purify more water in many older systems, especially on cold water feeds.
DOW FILMTEC TW30-2540 is the industry standard for reliable operation and production of the highest quality water.

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psig (41 bar)
Maximum Feed Flow Rate 6 gpm (1.4 m³/hr)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning (30 min.) 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

DUPONT FILMTEC TW30-2540 Membrane

DOW FILMTEC XLE-2540 Membrane

aqua@2025 — Thu, 13 Mar 2025 12:36:32 +0000

DOW FILMTEC XLE-2540 is the most productive, lowest pressure RO membrane available, delivering the lowest total system cost. It may be cleaned over a wide pH range (pH 1-13) for the most effective cleaning.

Advantages

High flux results in high yields
High rejection provides good water quality
Filmtec performance and quality

Important Information

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Feed pressure should be increased gradually over a 30-60 second time frame.
Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
Permeate obtained from first hour of operation should be discarded.

General Information

Keep elements moist at all times after initial wetting.
If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
Maximum pressure drop across an entire pressure vessel (housing) is 30 psi (2.1 bar).
Avoid static permeate-side backpressure at all times.

Models

Specifications

Product	Part Number	Applied Pressure psig (bar)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)
XLE-2540	154543	100 (6.9)	850 (3.2)	99

Features

Operating Limits

Membrane Type Polyamide Thin-Film Composite
Maximum Operating Temperature 113°F (45°C)
Maximum Operating Pressure 600 psi (41 bar)
Maximum Pressure Drop 13 psig (0.9 bar)
pH Range, Continuous Operation 2 – 11
pH Range, Short-Term Cleaning 1 – 13
Maximum Feed Silt Density Index SDI 5
Free Chlorine Tolerance <0.1 ppm

Applications

Commercial Water treatment systems
Food service
Medical and research institutions
Hospitality industry

Docs

Dow Filmtec XLE-2540 Membrane