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Manufacturer of Industrial RO Membrane in China

Widely used in electric power, petrochemical, steel, electronics, medicine, food and beverage, municipal and environmental protection.

Brief Introduction

Reverse osmosis, also known as reverse osmosis, is a membrane separation operation in which a pressure difference is used as a driving force to separate a solvent from a solution. Pressure is applied to the feed solution on one side of the membrane and when the pressure exceeds its osmotic pressure, the solvent permeates in the reverse direction of natural osmosis. This results in a permeable solvent on the low pressure side of the membrane. The concentrated solution is obtained on the high pressure side.

Specifications and Major Properties


Average Permeated Flow GPD (m3/d)

Stable Rejection Rate (%)

Minimum Rejection Rate (%)

IWL 21-8040 10000(37.8) 99.5 99.2
IML 22-8040 1 1000(41.5) 99.5 99.2
IWL 21-4040 2500(9.4) 99.5 99.2

Testing Conditions:

Testing Pressure: 225 psi (1.55Mpa)

Temperature of Testing Solution: 25°C

Concentration of Testing Solution (NaCl): 2000ppm

pH Value of Testing Solution: 7.5

Recovery Rate of Single Membrane Element: 15%


(1) Highly efficient desalination rate at high flow rates

(2) Have high mechanical strength and service life

(3) be able to function at low operating pressures;

(4) Resistant to chemical or biochemical effects;

(5) Less affected by factors such as pH and temperature;

(6) Easy to source raw materials for membrane production, simple processing and low cost.

Scope of application

1.Particularly suitable for small pure water systems such as drinking water preparation.

2.Use when the salt content of the feed water is less than 500mg/l.

Dimensions of Membrane Element

All dimensions are shown in: millimeter (inch)

Dimensions of Membrane Element (1)

Dimensions of Membrane Element (2)

RO membrane use precautions

1. Before installation, keep sealed packaging and store in a dry and cool place to avoid exposure to the sun and to prevent freezing.

2. When installing, use appropriate lubricant, glycerin as.

3. When running a new system, flush out the protective fluid and solvent.

4. After 1 hour of operation, record the operating parameters and after 48 hours record the operating parameters again to compare the changes between the two.