Procurement Object

• What is being procured: Water treatment coagulant polyaluminium chloride.
• Main technical requirements, properties:
  • Aluminium $\text{Al}^{3+}$ (minimum): $9.3 \pm 0.3%$
  • pH: $<1.0$
  • Density ($25^\circ\text{C}$): $1.39 \pm 0.03 \text{ g/cm}^3$
  • Viscosity: $40 \pm 10 \text{ mPas}$
  • Freezing point: $-15^\circ\text{C}$
  • Basicity: $43 \pm 2%$
  • Stability: Must be stable over time, must not precipitate even during long-term storage of $200$ tons. Must not crystallize or separate sediment…
     
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