Scale control
Helps inhibit precipitation and crystal growth to reduce membrane scaling.
Product Water Treatment
Reverse Osmosis Antiscalant
Scale inhibitor used to reduce mineral scaling and fouling in RO/NF systems—helping stabilize flux and differential pressure, and supporting higher recovery when properly selected and dosed.
✓ Low-ppm dosing (grade dependent)
✓ Targets carbonate / sulfate / silica risks
✓ Injection: pretreatment line / before cartridge
✓ Drums / IBC + SDS/COA/TDS
Packaging: drums / IBC / bulk (lane-dependent)
Documentation: SDS / COA / TDS on request
Lead time depends on grade, volume & origin
Performance stability
Supports stable permeate flow and helps manage differential pressure rise.
Recovery support
Proper selection can enable higher recovery within scaling limits (site-specific).
Antiscalant is one part of the protection package—pretreatment, SDI control, filtration, and correct cleaning strategy matter just as much.
What it is
RO antiscalants are specialty scale inhibitors dosed into the feed stream to reduce mineral scaling and certain types of particulate fouling on membrane surfaces. They typically work by interfering with nucleation/crystal growth and by dispersing precipitates so they are carried out with the concentrate rather than depositing on the membrane.
Common scale risks addressed (grade dependent)
- Carbonates: calcium carbonate (CaCO3)
- Sulfates: calcium sulfate, barium sulfate, strontium sulfate
- Phosphates: calcium phosphate (risk dependent)
- Silica/silicates: requires correct grade and conservative design
- Metal oxides/iron fouling: dispersion support (pretreatment still required)
Selection is chemistry-driven
We quote the right grade once we have your feed-water analysis, recovery target, and membrane type—so dosing and performance are predictable.
Note: Antiscalant selection should be validated against membrane manufacturer guidance and your operating conditions (pH, temperature, recovery, and concentrate chemistry).
Applications
Typical usage patterns. Tell us your process and constraints and we’ll align the right specification.
- RO membrane scale control for brackish water and industrial feed
- Seawater RO pretreatment programs (grade dependent)
- NF and membrane concentration processes
- Reuse / wastewater polishing (with correct pretreatment and compatibility)
Dosing & injection (practical)
Typical dosage
Often low-ppm as product (commonly ~1–10 mg/L), optimized using water analysis and recovery target.
Injection point
Commonly dosed into the RO feed line ahead of cartridge filters / static mixer (site dependent).
Key monitoring
Differential pressure, normalized flux, permeate quality, and scale indicators in concentrate.
Stable dosing matters: use a compatible metering pump, maintain suction integrity, and keep chemical day-tank protected from contamination.
Typical specifications & formats
Values depend on grade and customer requirements. Confirm details on quotation (TDS/COA).
Product type
RO/NF antiscalant (program per water analysis)
Form
Liquid concentrate
Packaging
Drums / IBC / bulk (lane-dependent)
Key controls
pH, density, active solids, appearance (per grade)
Compatibility
Confirm with membrane type and cleaning chemicals in use
Documentation
SDS / COA / TDS on request
Operational notes (typical)
Helps maintain stable RO performance over time.
Storage
Store sealed, protect from freezing/overheating (limits per SDS/TDS). Keep day tank clean.
Cleaning regime
Antiscalant reduces scale risk but does not replace periodic CIP—use compatible cleaners.
Verification
Track normalized flux/pressure and inspect cleaning frequency to confirm program success.
Specifications may vary depending on grade, origin, and packaging selection.
FAQ
Quick answers for procurement and plant operations.
Do I still need acid dosing if I use antiscalant?
Sometimes. Acid is used to lower carbonate scaling tendency, while antiscalant broadens protection against multiple scale species. The correct approach depends on alkalinity, recovery, and membrane limits.
Can antiscalant fix high SDI or turbidity?
No. Antiscalant is not a substitute for pretreatment. High SDI/turbidity should be addressed with filtration/pretreatment to prevent particulate fouling and rapid pressure rise.
Will it affect membrane cleaning?
It can influence cleaning behavior. Choose a membrane-compatible grade and confirm that your CIP chemicals and procedure are compatible with the antiscalant program.
What information do you need for a correct recommendation?
A recent feed-water analysis, operating recovery %, temperature, membrane type, and any pH/pretreatment details. This lets us select a grade and propose a realistic starting dose.
What packaging and documents are available?
Typically drums and IBC. Documentation pack can include SDS, TDS, and COA (batch values) on request.
Is it suitable for seawater RO?
There are grades designed for SWRO conditions and specific scale risks. Share your analysis and operating targets so we can confirm suitability and dosing.
Fast-track your quote
Send water analysis + recovery target + membrane type + current pretreatment. We’ll respond with the best-fit grade, starting dose, and documentation options.