ORINS Membrane–PS
PS Process Concentration Nanofiltration Series
The PS series spans approximately 80–400 Da for concentration, desalination, decolorization and fractionation of high-value process feeds.
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PRODUCT OVERVIEW
Characteristics
The PS series provides graded process nanofiltration elements for fine molecular retention, concentration and desalination of high-value feeds.
- Multiple grades across approximately 80–400 Da
- Preferential passage of monovalent salts and selected small solutes
- 34 mil feed spacer for fouling control
- Precision winding and low permeate resistance
TECHNICAL DATA
Specifications and operating conditions
| Element | Material | Active area | Reference flow / flux | MWCO | Feed spacer | Application focus |
|---|---|---|---|---|---|---|
| PS0-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 38.6 m³/d | 250–400 Da | 34 mil | Organic desalination and decolorization |
| PS1-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 30.7 m³/d | 300–400 Da | 34 mil | Organic acid decolorization and antibiotic concentration |
| PS2-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 30.7 m³/d | Approx. 100 Da | 34 mil | Organic, amino acid and polyol concentration |
| PS2-6H-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 38.6 m³/d | 300–400 Da | 34 mil | High-flux concentration, desalination and decolorization |
| PS3-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 30.3 m³/d | 80–120 Da (manual text) | 34 mil | Fine separation of small organic molecules |
| PS4-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 30.7 m³/d | Approx. 150 Da | 34 mil | Antibiotic concentration, desalination and decolorization |
| PS5-8040 | Composite nanofiltration membrane | Not specified | 30 m³/d / 42.45 LMH | 150–250 Da | 34 mil | Contrast agents and high-value organics |
| PS6-8040 | Composite nanofiltration membrane | 365 ft² / 34 m² | 30.3 m³/d | 150–200 Da | 34 mil | Fine chemical and pharmaceutical intermediate separation |
| PS7-4040 (source table) | Composite nanofiltration membrane | Not specified | 42.45 LMH | 150–250 Da | Wide feed channel | Contrast agents, wastewater metals and antifreeze recovery |
Compiled from available PS manuals. PS3 MWCO is taken from body text; PS7 is listed as 4040 in the source table; the duplicated PS16 file is omitted pending confirmation.
Reference values and maximum limits do not establish a combined operating condition for every feed. Confirm selection and operating conditions for the actual duty.
APPLICATIONS
Typical applications
- Amino acid and polyol concentration
- Antibiotic and pharmaceutical refining
- Contrast-agent process concentration
- Organic acid decolorization
SELECTION
Validate with your feed
Select the PS grade through real-feed testing against target MW, salts, small impurities and flux.
Testing & scale-upOPERATION
Operating guidance
Confirm feed and pretreatment
Check composition, solids, viscosity, temperature, pH and oxidant residue; validate complex feeds at bench or pilot scale.
Fill and vent at low pressure
Fill with a compatible medium and vent air before applying operating pressure.
Ramp to stable operation
Increase pressure and circulation gradually while recording flux, rejection, pressure drop, temperature and recovery.
Monitor fouling and clean
Use a compatible cleaning program when normalized flux declines or pressure drop rises.
Shutdown and preserve
Keep wetted elements wet; for extended shutdown use 1.0% food-grade sodium bisulfite prepared in RO permeate.