It delays precipitation
Minerals pass the point where they would normally drop out. The antiscalant keeps them in the water for longer.
Solutions
What Is an Antiscalant, and How Do You Select It?
An antiscalant is a chemical dosed before the reverse osmosis membrane. It delays hardness and silica from becoming scale on the membrane. Selection depends on the feed water analysis and the projection report.
How does it work?
It keeps crystals small
If a crystal forms, it does not grow and stick to the membrane. It stays small.
It carries particles
Fine particles stay dispersed. They leave the system with the concentrate.
Where is it used?
Reverse osmosis
The antiscalant is dosed before the reverse osmosis membrane. Salt stays behind. Hardness and silica can pass saturation.
Nanofiltration
Nanofiltration is also a membrane step that leaves salt behind. The same scale risk can occur. Our antiscalants are for reverse osmosis.
How do you select it?
Feed water analysis
Hardness, silica and iron are read in the analysis. The product is selected from this data.
Recovery
As recovery rises, the concentrate gets saltier. The antiscalant has a harder job.
Projection report
The dosage is set from a projection report of this analysis.
Silica is separate
For high silica, select C scalant 6090 or the more concentrated C scalant 6080. The standard drinking-water product does not fit every feed water.
Our antiscalants
pH and density are the product values. The table has no dosage.
| Product | Function | pH | Density | NSF |
|---|---|---|---|---|
| C scalant 1085 | It is an NSF approved antiscalant. It protects reverse osmosis membranes against scaling and fouling. | 10,0 – 11,0 (20 °C) | 1,10 – 1,20 gr/cm³ (20 °C) | NSF |
| C scalant 2005 | It is an NSF approved, high-concentration antiscalant. It protects reverse osmosis membranes against scaling and fouling, also at high hardness. | 10,0 – 11,0 (20 °C) | 1,30 – 1,40 gr/cm³ (20 °C) | NSF |
| C scalant 6090 | It is a special antiscalant for feed water with a high silica content. It protects reverse osmosis membranes against silica scale. | 5 – 6 (20 °C) | 1,07 – 1,17 gr/cm³ (20 °C) | — |
| C scalant 6080 | It is a high-concentration antiscalant for silica. It is more concentrated than C scalant 6090 and protects the membrane when silica is high. | 2,5 – 3,5 (25 °C) | 1,07 – 1,17 gr/cm³ (25 °C) | — |
C-mec 17
C-mec 17 is not an antiscalant. It is a membrane disinfectant for the periodic disinfection of reverse osmosis membranes.
Request the MSDS and the TDS
For an antiscalant MSDS or TDS, write the product name in the quote form. Our team sends the file.
Frequently asked questions
What is an antiscalant?
An antiscalant is a chemical dosed before the reverse osmosis membrane. It delays hardness and silica from becoming scale on the membrane. If a crystal forms, it keeps the crystal small. It carries fine particles in suspension.
What sets the antiscalant dosage?
The dosage is set from a projection report of the feed water analysis. Hardness, silica, iron and recovery are read together.
Is there an NSF-approved antiscalant?
Yes. C scalant 1085 and C scalant 2005 are NSF approved antiscalants. Both are for drinking and domestic water. C scalant 1085 has the standard concentration. C scalant 2005 is more concentrated and also protects at high hardness.
Which antiscalant is used for silica?
Use C scalant 6090 when silica is high. Select C scalant 6080 for a higher concentration. Both protect the membrane against silica scale.
We help you select the antiscalant for your water
Send your feed water analysis. If you want the MSDS or the TDS, also write the product name.
We reply to quote requests within 12 hours.