The Toray UTC-73U flat sheet membrane is being discontinued by the manufacturer and replaced by the Toray UTC-73UAC membrane.
| Product | UTC-73UAC(New) | UTC-73U(Old) |
| Manufacturer | Toray | Toray |
| Applications | Low Energy, High Rejection Brackish Water Treatment | Water Treatment/Desalination |
| pH Range | 2-11 | 2-11 |
| Permeate Flux (gfd1)/psi | 29-40/150 | 29.5/109 |
| NaCl Rejection | 99.5-99.7% | 99.4% |
| Polymer | Polyamide | Polyamide |
1 GFD: Gallons per Square Feet Membrane Active Area per Day
Discontinued products will include the following Sterlitech Part numbers:
- YM73USP18
- YM73USP195
- YM73USP4205
- YM73USP475
Limited quantities of Toray 73U are still available. For more information or for assistance with finding a suitable replacement, please contact Sterlitech. Additional RO membranes can be found here.