FILMTEC Extra Low Energy (XLE) Elements for Commercial Systems
Product Information
FILMTEC Membranes • FilmTec Corporation is a wholly owned subsidiary of The Dow Chemical Company.
*Trademark of The Dow Chemical Company
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 Operationa ................................................................2–11
pH Range, Short-Term Cleaning (30 min.)b...................................................1–12
Maximum Feed Silt Density Index (SDI) ......................................................SDI 5
Free Chlorine Tolerancec........................................................................<0.1 ppm
a Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
b Refer to Cleaning Guidelines in specification sheet 609-23010/CH 172-086-E.
c 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, FilmTec recommends removing residual free chlorine by pretreatment prior to membrane exposure. Please refer to technical
bulletin 609-22010/CH 172-144-E for more information.
New 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.
