Goway’s industrial-grade STPP, SHMP, and TSPP deliver precise scale inhibition, metal passivation, and pH buffering — tailored to your water chemistry and system type.
New guide: Compare STPP vs SHMP as scale inhibitors for cooling towers & boilers →
Scale and corrosion are not “maintenance issues” — they are predictable performance losses that hit energy, uptime, and asset life.
If you need help choosing between SHMP and STPP for your water analysis, start here:
STPP vs SHMP scale inhibitor guide.
Infographic: Scale buildup vs treated pipe — With vs. Without phosphate treatment
Water treatment performance is chemistry-driven. Use SHMP for threshold inhibition at ppm-level, STPP for sequestration of trace metals and fouling control, and TSPP for buffering and corrosion protection in closed loops.
Best for: high-hardness cooling water, RO antiscalant programs.
Mechanism: “threshold effect” at 2–10 ppm helps prevent CaCO3 nucleation and growth.
Tip: often works synergistically with phosphonates (confirm system chemistry & discharge limits).
Best for: boiler feedwater where iron/manganese and trace metals drive fouling/red water.
Mechanism: binds metal ions → reduces discoloration and metallic fouling.
Note: can hydrolyze to orthophosphate over time → monitor residuals and dosing control.
Best for: closed-loop systems (HVAC, glycol).
Mechanism: supports protective phosphate film formation and helps maintain pH 8.5–9.5 window.
Tip: closed loops still need monitoring — confirm compatibility with glycols and inhibitors.
Use this selection matrix to match your system conditions to the most effective phosphate for water treatment scale inhibition and corrosion control.
| System Type | Hardness (as CaCO3) | Temp. | Recommended Phosphate | Why? |
|---|---|---|---|---|
| Open Cooling Tower | >300 ppm | <50°C | SHMP 68% | Superior threshold inhibition at low ppm; strong for scale inhibition in high-hardness water. |
| Steam Boiler | <100 ppm | >100°C | STPP | Sequesters trace metals and reduces fouling risk; supports boiler water conditioning strategy. |
| Closed Glycol Loop | Low | 60–80°C | TSPP | Stable pH buffering and corrosion protection in closed-loop programs (monitor pH and inhibitor compatibility). |
Industrial water treatment performance depends on consistency. Verify the parameters that control solubility, residue risk, and dosing stability.
For a broader industrial selection hub, see: Industrial Phosphates Technical Guide.
Different roles need different outputs. Choose your path below — we’ll respond with the right dosage logic and documentation set.
In most high-hardness open cooling towers, SHMP (68%) is often preferred due to its threshold effect at low ppm dosage. For a practical comparison, see:
STPP vs SHMP scale inhibitor guide.
STPP is commonly used as a sequestrant to bind trace metals (iron/manganese) and reduce fouling/discoloration risks. Your boiler program should be designed around feedwater quality, temperature, and discharge requirements — share your water analysis for a targeted recommendation.
A typical trial range is 2–10 ppm, but dosage depends on hardness, cycles of concentration, temperature, and competing ions. We recommend validating with jar tests or controlled trials and monitoring residuals.
Yes. We can provide COA (per batch), SDS (GHS), and TDS/spec sheets. Tell us your destination market and system type so we prepare the correct document set.