QC Testing of Spiral-Wound RO and NF Elements: What to Test and Why

At a glance. A Tech Inc. Spiral-Wound Element QC Test Bench wet-tests elements at standard conditions and records a report for each serial number.

What to test

• Vacuum decay: finds glue-line and O-ring leaks first.

• Permeate flow: at standard pressure, temperature and recovery.

• Salt rejection: against the datasheet value.

Standard conditions

Typically 2000 mg/L NaCl at 15.5 bar for brackish RO elements, 25 °C and 15% recovery, or the maker's own standard.

Frequently asked questions

Can it test NF elements? Yes, with suitable test solutions and pressures.

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