Membrane Type:

Polyamide Thin-Film Composite (TFC)

Maximum Operating Temperature:

113F (45C)

Maximum Operating Pressure:

600 psi (41 bar)

Maximum Feed Flow Rate:

16.0 gpm (3.6 m3/hr)

pH Range, Continuous Operation:

2-11***

pH Range, Short-Term Cleaning:

1-12* (30min)

Maximum Feed Silt Density Index:

5 SDI

Free Chlorine Tolerance:

<0.1 ppm**

Permeate Flow Rate:

2,500 GPD (9.5 m3/day)*

Stabilized Salt Rejection:

>97.0%

*Permeate flow and salt rejection based on the following test conditions: 2,000 ppm MgSO4, 77°F (25°C) and 15% recovery at the pressure specified above. NF270-4040 individual elements may vary -15% / +50%.

**Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure. Most RO systems have carbon pre-filters for this purpose.

***Maximum temperature for continuous operation above pH 10 is 95F (35C).