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: $40 \pm 10 \text{ mPas}$
  • Freezing temperature: $<-15^{\circ}\text{C}$
  • Basicity: $43 \pm 2%$
  • The shelf life of the chemical must not be shorter than 1 year.
  • Must have a **drinking water use certificate…
     
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