Bumblebee Linens

CSM NF membranes are capable of selectively rejecting divalent ions, making it ideal for a wide range of applications. Typical uses include production of food & beverage, dye recovery, and water softening and removal of specific impurities (i.e. color, DBP, THM) for potable use.

CSM NF Membranes are constructed with either a polyamide or piperazine thin-film layer, and are available in various sizes.

Inquire within for custom-engineered solutions.

Product Type
Nanofiltration Membrane

40 in x 8.0 in

Product Specifications

Product Flow Rate Ionic Rejection (%)
(GPD) (m³/d) Monovalent / Divalent
7,000 26.5 40–70 / 45–70

• Permeate flow may vary ±15%.
• Tested at applied pressure 75 psi (0.5 MPa), 15% recovery, 77°F (25°C), pH 6.5–7.0
• Monovalent ion rejection: 2,000 mg/L NaCl
• Divalent ion rejection: 500 mg/L CaCl₂
• MgSO₄ rejection is 97.0% (same test conditions as those used for monovalent ion rejection)
Maximum Operating and Cleaning Limits

Pressure Drop / Element Pressure Drop / 240″ Vessel Operating Pressure Feed Flow Rate Operating Temperature Operating pH Range CIP pH Range Turbidity NTU SDI Chlorine Concentration
15 psi (0.1 MPa) 60 psi (0.41 MPa) 600 psi (4.14 MPa) 75 gpm (17.0 m³/hr) 113°F (45°C) 2.0–11.0 1.0–13.0 1.0 NTU SDI 5 < 0.1 mg/L