Bumblebee Linens

Description
FILMTEC™ NF membrane elements are designed for process applications where a separation of solutes is desired.

• NF is a durable polypiperazine amide membrane designed to reject organics with a molecular weight above 200 while passing monovalent salts.
• FILMTEC NF membrane elements are used in a variety of applications such as desalting organic compounds, acid processing, metal recovery and antifreeze recovery.
• FILMTEC NF membrane elements replace discontinued NF45 elements.

Product Type
Polypiperazine amide thin-film composite

Dimension
40 in x 3.9 in

Product Specifications

Applied
Pressure
Permeate
Flow Rate
Typical
Stabilized
Salt
Rejection (%)
(psig) (bar) (GPD) (m³/h)

Operating and Cleaning Limits

Maximum
Operating Temperature
Maximum
Operating Pressure
Maximum Pressure Drop (tape wrapped) Maximum Pressure Drop (fiberglassed) pH Range,
Continuous Operation
pH Range,
Short-Term Cleaning (30 min.)
Maximum Feed
Silt Density
Index (SDI)
Free
Chlorine
Tolerance
113°F (45°C) 600 psig (41 bar) 13 psig (0.9 bar) 15 psig (1.0 bar) 2 – 11 1 – 12 SDI 5 < 0.1 ppm

• Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
• Refer to Cleaning Guidelines in specification sheet 609-23010 for NF90.
• 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 for more information.