Brackish Membrane Sizing Selector

The 4-Factor Fit Test: enter your feed and target output to get a Z1 model recommendation and an element-count estimate. For scoping only — final sizing is confirmed in your RFQ.

1. Feed TDS (ppm)

2. Target permeate output (GPD)

3. Element diameter

4. Target system recovery (%)

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Estimates assume the standard rated permeate flow per element (10,500 GPD for MB-Z1-8040, 12,000 for 8040 PLUS, 2,400 for MB-Z1-4040) at standard test conditions. Actual system output depends on feed temperature, TDS, pressure, fouling, and staging. TDS above 10,000 ppm exceeds the brackish design range.