Procurement Object

• What is being procured: Water treatment coagulant polyaluminium chloride (PAC).
• 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: $40 \pm 10 \text{ mPas}$
  • Basicity: $43 \pm 2%$
  • Freezing point: $\leq -15^{\circ}\text{C}$
  • Stability: Must be stable over time and must not sediment/crystallize even at low temperatures ($0^{\circ}\text{C}$ to $+10^{\circ}\text{C}$).
  • Quantity: Approximately…
     
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