| Membrane Model | Min. Rejection Rate(%) | Permeate Flow(GFD) | Test Method |
| ULP | 99.4 | 38±3 | A |
| 99.4 | 19±2 | B |
| Test Method | Solution | Temperature（℃） | pH Value | Operating Pressure psi(MPa) |
| A | 1500mg/L(NaCl) | 25 | 7.5-8 | 150(1.03) |
| B | 500mg/L(NaCl) | 25 | 7.5-8 | 150(1.03) |
Purchase Confirmation of Membrane Sheets’ Technical Specification
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Quality Requirement |
□ According to the Keensen’s standard □According to the customer’s requirement |
Usage |
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Information Customer provided |
□ Design drawing (including product size and logo) □ Purchasing technical specification □ Packaged sample |
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Special Specifications |
Membrane Sheets Types |
Name of Membrane Sheets |
Quantity（Roll） |
Remark 1 |
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□RO □NF |
□ BW □ ULP-HR □ ULP □ NF1 □ NF2 |
□500m/roll □1000m/roll |
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Special Specifications and Parameters |
Rejection Rate (%) |
Membrane Filtration Flux GFD（NaCl） |
Time for Stable Performance(h) |
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□NaCl □MgSO4 |
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Test Condition |
Temperature |
pH Value |
Concentrate Flow |
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25℃ |
7.5-8.0 |
1.1GPM |
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Concentration of Feed Water |
Operating Pressure psi(MPa) |
Remark 2 (optional) |
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NaCl MgSO4 □500ppm □2000ppm □1500ppm □2000ppm |
□225psi (1.55MPa) □150psi (1.03MPa) □70psi (0.48MPa) |
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Approved |
Approved by Customer Signature： Date： |
Approved by Engineer Signature： Date： |
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